INCOME TAXES, Uncertain Tax Positions (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Unrecognized tax benefits [Abstract]
Unrecognized tax benefits, beginning of year	$ 16,480	$ 20,758
Gross increases - tax positions in prior period	3,027	517
Gross decreases - tax positions in prior period	(376)	(201)
Gross increases - current period tax positions	1,282	1,203
Settlements	0	(5,797)
Unrecognized tax benefits, end of year	20,413	16,480
Unrecognized tax benefits that would impact income tax expense	5,329
Accrued interest and penalties	200
Income taxes payable noncurrent	1,100
Reserves reversed related to uncertain tax positions	$ 1,900