DEFERRED COMPENSATION ARRANGEMENTS (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011
DEFERRED COMPENSATION ARRANGEMENTS
Amount accrued	$ 1,997,000	$ 694,000
Deferred compensation arrangements
Amount accrued included in accrued liabilities	308,000	1,042,000
Supplemental Executive Retirement Plan
Deferred compensation arrangements
Amount that would be contributed to Supplemental Executive Retirement Plan in event of death, disability, or termination without cause for certain key executives	$ 769,000