PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Details 8) (Pension Benefits [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2010
Fair value of pension assets	$ 31,392		$ 28,897	$ 30,329
Fair Value, Inputs, Level 1 [Member]
Fair value of pension assets	31,392
Corporate Debt Securities [Member]
Fair value of pension assets	1,992
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of pension assets	1,992
Cash and Cash Equivalents [Member]
Fair value of pension assets	1,432
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of pension assets	1,432
Equity Securities [Member] | Us Companies [Member]
Fair value of pension assets	14,133
Equity Securities [Member] | Us Companies [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of pension assets	14,133
Equity Securities [Member] | International Companies [Member]
Fair value of pension assets	4,856
Equity Securities [Member] | International Companies [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of pension assets	4,856
Mutual Funds [Member]
Fair value of pension assets	2,942	[1]
Mutual Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of pension assets	2,942	[1]
Us Treasury Securities [Member]
Fair value of pension assets	3,534
Us Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of pension assets	3,534
Collateralized Mortgage Backed Securities [Member]
Fair value of pension assets	2,503
Collateralized Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of pension assets	$ 2,503

[1] The mutual fund investments are invested in intermediate term bonds of government and government sponsored entities.