PREPAID EXPENSES AND OTHER CURRENT ASSETS AND ACCRUED EXPENSES (Schedule of Prepaid Expenses and Other Current Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Prepaid Expenses And Other Current Assets [Line Items]
Other receivable	$ 4,551	$ 1,020
Prepaid expense	2,252	2,482
Other	3,179	3,574
Prepaid expenses and other current assets	18,245	13,906
Prepaid Direct Cost [Member]
Prepaid Expenses And Other Current Assets [Line Items]
Prepaid expense	5,586	5,060
Prepaid Software License [Member]
Prepaid Expenses And Other Current Assets [Line Items]
Prepaid expense	1,451	833
Prepaid Software And Hardware Maintenance Cost [Member]
Prepaid Expenses And Other Current Assets [Line Items]
Prepaid expense	$ 1,226	$ 937