EMPLOYEE BENEFIT PLANS (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2012 Minimum	Dec. 31, 2012 Maximum	Dec. 31, 2012 Marketable equity securities	Dec. 31, 2012 Marketable equity securities Minimum	Dec. 31, 2012 Marketable equity securities Maximum	Dec. 31, 2012 Fixed-income securities	Dec. 31, 2012 Fixed-income securities Minimum	Dec. 31, 2012 Fixed-income securities Maximum	Dec. 31, 2012 Pension Plans	Dec. 31, 2011 Pension Plans	Dec. 31, 2010 Pension Plans	Dec. 31, 2012 Pension Plans Level 1	Dec. 31, 2011 Pension Plans Level 1	Dec. 31, 2012 Pension Plans Level 2	Dec. 31, 2011 Pension Plans Level 2	Dec. 31, 2012 Pension Plans Equity mutual funds, large-cap	Dec. 31, 2011 Pension Plans Equity mutual funds, large-cap	Dec. 31, 2012 Pension Plans Equity mutual funds, large-cap Level 1	Dec. 31, 2011 Pension Plans Equity mutual funds, large-cap Level 1	Dec. 31, 2012 Pension Plans Equity mutual funds, small-cap	Dec. 31, 2011 Pension Plans Equity mutual funds, small-cap	Dec. 31, 2012 Pension Plans Equity mutual funds, small-cap Level 1	Dec. 31, 2011 Pension Plans Equity mutual funds, small-cap Level 1	Dec. 31, 2012 Pension Plans Equity trusts, large-cap	Dec. 31, 2011 Pension Plans Equity trusts, large-cap	Dec. 31, 2012 Pension Plans Equity trusts, large-cap Level 2	Dec. 31, 2011 Pension Plans Equity trusts, large-cap Level 2	Dec. 31, 2011 Pension Plans Equity trusts, international	Dec. 31, 2011 Pension Plans Equity trusts, international Level 2	Dec. 31, 2012 Pension Plans Fixed-income securities	Dec. 31, 2011 Pension Plans Fixed-income securities	Dec. 31, 2012 Pension Plans Fixed-income securities Level 2	Dec. 31, 2011 Pension Plans Fixed-income securities Level 2
Employee benefit plans
Fair value										$ 4,595	$ 4,456	$ 4,915	$ 1,853	$ 926	$ 2,742	$ 3,530	$ 754	$ 399	$ 754	$ 399	$ 570	$ 527	$ 570	$ 527	$ 1,102	$ 1,346	$ 1,102	$ 1,346	$ 491	$ 491	$ 1,640	$ 1,693	$ 1,640	$ 1,693
Pension Plan Assets
Target Allocation (as a percent)				65.00%			35.00%
Expected return on plan assets (as a percent)		7.00%	11.00%		5.00%	9.00%		2.00%	6.00%
Long-term inflation rate (as a percent)	3.00%