Accrued Expenses and Other Current Liabilities - Accrued Expenses and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accrued Liabilities And Other Liabilities [Abstract]
Accrued marketing	$ 1,121	$ 1,106
Accrued cost of sales, including credit bureau costs	5,480	7,551
Accrued general and administrative expense and professional fees	2,190	2,712
Insurance premiums	360	444
Estimated liability for non-income business taxes	94	3,427	$ 4,458
Other	1,823	605
Total	$ 11,068	$ 15,845