ACCRUED EXPENSES (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Accrued Liabilities [Abstract]
Accrued payroll	$ 3,362	$ 1,366
Accrued bonus	1,493	1,173
Accrued vacation & holiday	3,257	2,465
Accrued employee benefits	1,815	1,463
Accrued operating lease obligations	1,706	1,440
Contingent consideration	7,950	0
Accrued professional fees	754	896
Other	3,366	2,305
Total accrued expenses	$ 23,703	$ 11,108