Schedule of Accrued Expenses (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Accrued expenses
Professional services contractor fees	$ 7,125	$ 6,550
Other taxes	5,338	9,031
Marketing and sales program expenses	5,188	1,508
Professional fees	3,276	3,654
Other	3,084	2,411
Self-insurance health and dental claims	2,523	2,182
Fixed assets in progress	2,417	855
Dividends payable	2,328	2,298
Employee reimbursable expenses	2,120	1,624
Short-term deferred rent	1,954	1,770
Partner commissions	1,748	2,199
Income taxes payable	1,038	1,391
Restructuring	98	105
Acquisition-related expenses and merger consideration		290
Foreign currency forward contracts		883
Total accrued expenses	$ 38,237	$ 36,751