Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation - Schedule of Information Regarding Stock Option Activity (Detail)

v2.4.1.9
Stock-Based Compensation - Schedule of Information Regarding Stock Option Activity (Detail) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of shares, Options granted 2,519,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross  
Number of shares, Options exercised 0us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised 0us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
Number of shares, Options canceled or expired 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod  
Number of shares, Outstanding at ending balance 2,519,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber  
Number of shares, Vested or expected to vest 423,750us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber
Number of shares, Exercisable 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber  
Weighted-Average Exercise Price, Options granted $ 2.00us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice  
Weighted-Average Exercise Price, Options exercised $ 0us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice  
Weighted-Average Exercise Price, Options canceled or expired $ 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice  
Weighted-Average Exercise Price, Outstanding ending balance $ 2.00us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice  
Weighted-Average Exercise Price, Vested or expected to vest $ 2.00us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice  
Weighted-Average Exercise Price, Exercisable $ 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice  
Minimum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted-Average Contractual Life, Options granted 5 years 7 months 6 days  
Weighted-Average Contractual Life, Outstanding 5 years 7 months 6 days  
Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted-Average Contractual Life, Options granted 5 years 9 months 18 days  
Weighted-Average Contractual Life, Outstanding 5 years 9 months 18 days