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Debt - Additional Information (Detail)
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3 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended | 0 Months Ended | 3 Months Ended | 12 Months Ended | 12 Months Ended | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||
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Mar. 31, 2015
USD ($)
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Mar. 31, 2014
USD ($)
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Dec. 31, 2014
USD ($)
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Dec. 31, 2013
USD ($)
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Dec. 31, 2014
Bridge Loan [Member]
USD ($)
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Dec. 31, 2013
Bridge Loan [Member]
USD ($)
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Dec. 31, 2014
Bridge Loan [Member]
Unsecured Debt Including Accrued Interest [Member]
USD ($)
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Dec. 31, 2013
Bridge Loan [Member]
Unsecured Debt Including Accrued Interest [Member]
USD ($)
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Jun. 30, 2014
Unsecured Debt Including Accrued Interest [Member]
Bridge Loan [Member]
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Dec. 31, 2014
Unsecured Debt Including Accrued Interest [Member]
Bridge Loan [Member]
USD ($)
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Dec. 31, 2013
Unsecured Debt Including Accrued Interest [Member]
Bridge Loan [Member]
USD ($)
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Apr. 14, 2014
Unsecured Debt Including Accrued Interest [Member]
Bridge Loan [Member]
USD ($)
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Apr. 14, 2014
Unsecured Debt Including Accrued Interest [Member]
Bridge Loan [Member]
EUR (€)
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Jun. 30, 2014
Unsecured Debt Including Accrued Interest [Member]
Bridge Loan [Member]
Tranche A [Member]
USD ($)
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Jun. 30, 2014
Unsecured Debt Including Accrued Interest [Member]
Bridge Loan [Member]
Tranche A [Member]
EUR (€)
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Apr. 14, 2014
Unsecured Debt Including Accrued Interest [Member]
Bridge Loan [Member]
Tranche A [Member]
USD ($)
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Apr. 14, 2014
Unsecured Debt Including Accrued Interest [Member]
Bridge Loan [Member]
Tranche A [Member]
EUR (€)
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Apr. 14, 2014
Unsecured Debt Including Accrued Interest [Member]
Bridge Loan [Member]
Tranche B [Member]
USD ($)
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Apr. 14, 2014
Unsecured Debt Including Accrued Interest [Member]
Bridge Loan [Member]
Tranche B [Member]
EUR (€)
|
Jun. 30, 2014
Unsecured Debt Including Accrued Interest [Member]
Bridge Loan [Member]
After Maturity Period [Member]
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Dec. 31, 2013
Unsecured Debt Including Accrued Interest [Member]
Bridge Loan [Member]
After Maturity Period [Member]
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Dec. 31, 2014
Unsecured Debt Including Accrued Interest [Member]
2014 Bridge Loan [Member]
USD ($)
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Dec. 11, 2014
Tbg [Member]
Tranches
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Mar. 31, 2015
Tbg [Member]
USD ($)
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Mar. 31, 2015
Tbg [Member]
EUR (€)
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Dec. 11, 2014
Tbg [Member]
USD ($)
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Dec. 11, 2014
Tbg [Member]
EUR (€)
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Apr. 03, 2014
Tbg [Member]
USD ($)
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Apr. 03, 2014
Tbg [Member]
EUR (€)
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Dec. 31, 2014
Tbg [Member]
Bank Loan [Member]
USD ($)
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Dec. 31, 2013
Tbg [Member]
Bank Loan [Member]
USD ($)
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Dec. 11, 2014
Tbg [Member]
Scenario, Previously Reported
USD ($)
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Apr. 03, 2014
Tbg [Member]
Scenario, Previously Reported
USD ($)
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Dec. 31, 2014
Tbg [Member]
Unsecured Debt Including Accrued Interest [Member]
USD ($)
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Dec. 31, 2013
Tbg [Member]
Unsecured Debt Including Accrued Interest [Member]
USD ($)
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Dec. 31, 2014
Tbg [Member]
Unsecured Debt Including Accrued Interest [Member]
Bank Loan [Member]
USD ($)
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Dec. 31, 2013
Tbg [Member]
Unsecured Debt Including Accrued Interest [Member]
Bank Loan [Member]
USD ($)
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Dec. 31, 2014
Tbg [Member]
Unsecured Debt Including Accrued Interest [Member]
Bank Loan [Member]
Other Current Liabilities [Member]
USD ($)
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Dec. 31, 2013
Tbg [Member]
Unsecured Debt Including Accrued Interest [Member]
Bank Loan [Member]
Other Current Liabilities [Member]
USD ($)
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Dec. 31, 2014
Tbg [Member]
Repayment Agreement [Member]
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Dec. 11, 2014
Tbg [Member]
Tranche One, Payment Due Jan 31, 2015 [Member]
USD ($)
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Dec. 11, 2014
Tbg [Member]
Tranche One, Payment Due Jan 31, 2015 [Member]
EUR (€)
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Dec. 11, 2014
Tbg [Member]
Tranche Two, Payment Due March 31, 2015 [Member]
USD ($)
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Dec. 11, 2014
Tbg [Member]
Tranche Two, Payment Due March 31, 2015 [Member]
EUR (€)
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Jan. 31, 2015
Tbg [Member]
Debt Instrument, Redemption, Period One [Member]
USD ($)
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Jan. 31, 2015
Tbg [Member]
Debt Instrument, Redemption, Period One [Member]
EUR (€)
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Mar. 31, 2015
Tbg [Member]
Debt Instrument, Redemption, Period Two [Member]
USD ($)
|
Mar. 31, 2015
Tbg [Member]
Debt Instrument, Redemption, Period Two [Member]
EUR (€)
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| Debt Instrument [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||
| Interest rate | 12.00% | 12.00% | 18.00% | 18.00% | 10.53% | 8.00% | ||||||||||||||||||||||||||||||||||||||||||
| Loan maturity date | Dec. 31, 2015 | Dec. 31, 2015 | Dec. 31, 2013 | |||||||||||||||||||||||||||||||||||||||||||||
| Outstanding principal on unsecured convertible stockholder loan | $ 0 | $ 2,753,200 | $ 0 | |||||||||||||||||||||||||||||||||||||||||||||
| Accrued interest | 345,302 | |||||||||||||||||||||||||||||||||||||||||||||||
| Aggregate borrowing capacity | 2,420,200 | 2,000,000 | 1,815,150 | 1,500,000 | 605,050 | 500,000 | ||||||||||||||||||||||||||||||||||||||||||
| Borrowed amount | 1,210,100 | 1,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||
| Debt instrument, percentage of debt redeemed | 67.00% | 67.00% | ||||||||||||||||||||||||||||||||||||||||||||||
| Beneficial conversion feature recognized | 2,236,581 | |||||||||||||||||||||||||||||||||||||||||||||||
| Interest expense | 4,170 | 109,289 | 2,654,727 | 493,937 | 326,429 | 317,014 | 71,757 | 79,668 | ||||||||||||||||||||||||||||||||||||||||
| Principal or interest payments | 0 | 0 | 181,515 | 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Amount of repayment to TBG outstanding | 1,130,000 | 1,050,000 | 1,650,000 | 1,200,000 | 1,270,000 | 1,290,000 | 726,060 | 600,000 | 544,545 | 450,000 | 644,460 | 600,000 | 483,345 | 450,000 | ||||||||||||||||||||||||||||||||||
| Principal amount, interest rate | 10.53% | 10.53% | ||||||||||||||||||||||||||||||||||||||||||||||
| Repayment agreement description | Under the repayment agreement, the Company has agreed to a payment schedule pursuant to which it will make semi-annual payments until 2016. | Under the repayment agreement, the Company has agreed to a payment schedule pursuant to which it will make semi-annual payments until 2016. | 12% per year of the German GAAP net income, adjusted for certain items per the Bank Loan, is payable to TBG. | Under the repayment agreement, the Company agreed to a payment schedule pursuant to which it would make semi-annual payments until 2016 | ||||||||||||||||||||||||||||||||||||||||||||
| Number of tranches | 2 | |||||||||||||||||||||||||||||||||||||||||||||||
| Outstanding principal on bank loan | 726,060 | 1,032,450 | ||||||||||||||||||||||||||||||||||||||||||||||
| Accrued interest balances | 544,545 | 619,470 | 19,117 | 20,649 | ||||||||||||||||||||||||||||||||||||||||||||
| Repayment fee rate | 30.00% | |||||||||||||||||||||||||||||||||||||||||||||||
| Additional interest premium | 6.00% | |||||||||||||||||||||||||||||||||||||||||||||||
| Interest expense including repayment fee and additional interest premium | 0 | 97,255 | ||||||||||||||||||||||||||||||||||||||||||||||
| Capital gain tax withheld | 127,482 | 118,688 | ||||||||||||||||||||||||||||||||||||||||||||||
| Repayment amount of debt | $ 1,000,323 | € 931,312 | ||||||||||||||||||||||||||||||||||||||||||||||