Schedule of Accrued Expenses (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Schedule of Accrued Liabilities [Line Items]
Other taxes	$ 2,434	$ 2,711
Restructuring	333	441
Professional fees	1,524	1,157
Income taxes	821	1,167
Professional services partners fees	334	256
Short-term deferred rent	1,004	1,111
Self-insurance health and dental claims	1,043	1,707
Dividends payable	1,142
Employee reimbursable expenses	1,708	879
Other	4,924	6,105
Total accrued expenses	$ 15,267	$ 15,534