Schedule of Accrued Expenses (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Schedule of Accrued Liabilities [Line Items]
Other taxes	$ 2,351	$ 2,759
Restructuring	429	626
Professional fees	1,191	1,146
Income taxes	670	1,954
Professional services partners fees	725	120
Short-term deferred rent	1,671	1,428
Self-insurance health and dental claims	1,709	1,931
Dividends payable	1,138	1,132
Employee reimbursable expenses	1,785	897
Construction in process	627
Other	5,015	6,343
Total accrued expenses	$ 17,311	$ 18,336