Annual report pursuant to Section 13 and 15(d)

Income Taxes - Summary of Reconciliation of U.S. Statutory Rate to Company's Effective Tax Rate (Detail)

v3.7.0.1
Income Taxes - Summary of Reconciliation of U.S. Statutory Rate to Company's Effective Tax Rate (Detail)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Income Tax Disclosure [Abstract]    
Federal income tax rate 34.00% 34.00%
Foreign rate differential (2.90%) (2.10%)
State tax, net of federal benefit 0.90% 3.10%
Permanent items (2.30%) (1.70%)
Other (0.90%) 2.90%
Withholding tax (0.70%) (1.50%)
Change in valuation allowance (28.80%) (36.20%)
Effective income tax rate (0.70%) (1.50%)