RESTRUCTURING CHARGES AND IMPAIRMENT LOSSES (LIABLITY ROLLFORWARD TABLE) (DETAILS) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Restructuring Cost and Reserve [Line Items]
Beginning balance, restructuring reserve	$ 2,067	$ 8,962
Expense	23,250	4,007
Payments	(20,863)	(10,546)
Reversals	(375)	(356)
Ending balance, restructuring reserve	4,079	2,067
Closure of Delivery Centers [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance, restructuring reserve	415	695
Expense	618	74
Payments	(658)	(354)
Reversals	(375)	0
Ending balance, restructuring reserve	0	415
Reduction in Force [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance, restructuring reserve	1,652	8,267
Expense	22,632	3,933
Payments	(20,205)	(10,192)
Reversals		(356)
Ending balance, restructuring reserve	$ 4,079	$ 1,652