BUSINESS REORGANIZATION EXPENSES (Changes in accrued business reorganization expenses) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	15 Months Ended
	Mar. 31, 2013	Mar. 31, 2013 Employee
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated		37
Restructuring Reserve [Roll Forward]
Balance, beginning of year	$ 3,420
Changes in estimate	7
Additional charges	1,975
Payments	(1,377)
Balance, end of period	4,025	4,025
Lease termination payments
Restructuring Reserve [Roll Forward]
Balance, beginning of year	2,678
Changes in estimate	7
Additional charges	0
Payments	(510)
Balance, end of period	2,175	2,175
Employee termination benefits
Restructuring Reserve [Roll Forward]
Balance, beginning of year	715
Changes in estimate	0
Additional charges	1,764
Payments	(633)
Balance, end of period	1,846	1,846
Other associated costs
Restructuring Reserve [Roll Forward]
Balance, beginning of year	27
Changes in estimate	0
Additional charges	211
Payments	(234)
Balance, end of period	$ 4	$ 4