Accrued Expenses and Other Liabilities - Summary of Accrued Expenses and Other Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Accrued Liabilities and Other Liabilities [Abstract]
Legal settlements	$ 18,750	$ 20,000
Marketing, commissions and other services	22,553	19,425
Employee salaries, wages, and benefits	15,961	18,507
Consulting, contract labor and professional fees	14,446	5,317
Fixed assets	1,134	874
Sales, use, property, and income taxes	568	732
Other	2,814	2,170
Total accrued expenses and other liabilities	$ 76,226	$ 67,025