Accrued Expenses and Other Current Liabilities - Accrued Expenses and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Accrued Liabilities and Other Liabilities [Abstract]
Accrued marketing	$ 1,096	$ 1,121
Accrued cost of sales, including credit bureau costs	4,876	5,480
Accrued general and administrative expense and professional fees	1,613	2,190
Insurance premiums	367	360
Estimated liability for non-income business taxes	0	94	$ 3,460	$ 3,427
Other	1,892	1,823
Total	$ 9,844	$ 11,068