EMPLOYEE BENEFIT PLANS (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Fair value of plan assets and future benefit payments
Total	$ 167,544	$ 165,044	$ 171,457
Net Realized and Unrealized Gains/(Losses)	14,656	(2,520)
Balance at the end of the period	167,544	165,044	171,457
Estimated future benefit payments
2013	8,922
2014	9,578
2015	10,230
2016	10,705
2017	11,176
Thereafter	61,743
Total	112,354
Level 3
Fair value of plan assets and future benefit payments
Total	12,890	7,092	7,671
Net Realized and Unrealized Gains/(Losses)	997	833
Net Purchases, Issuances and Settlements	4,801	(1,412)
Balance at the end of the period	12,890	7,092	7,671
Real Estate
Fair value of plan assets and future benefit payments
Total	12,890	7,092	6,248
Balance at the end of the period	12,890	7,092	6,248
Real Estate | Level 3
Fair value of plan assets and future benefit payments
Total	12,890	7,092	6,248
Net Realized and Unrealized Gains/(Losses)	997	844
Net Purchases, Issuances and Settlements	4,801
Balance at the end of the period	12,890	7,092	6,248
Alternative Investments
Fair value of plan assets and future benefit payments
Total			1,423
Balance at the end of the period			1,423
Alternative Investments | Level 3
Fair value of plan assets and future benefit payments
Total			1,423
Net Realized and Unrealized Gains/(Losses)		(11)
Net Purchases, Issuances and Settlements		(1,412)
Balance at the end of the period			$ 1,423