ACCOUNTING POLICIES (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Cash equivalents
Cash equivalents	$ 76,200,000	$ 81,200,000
Restricted cash
Restricted cash	1,905,000	2,036,000
Total
Assets:
Cash equivalents and restricted cash - Money market mutual funds	76,248,000	81,159,000
Trading securities held in a rabbi trust	264,000	302,000
Total assets	76,512,000	81,461,000
Liabilities:
Deferred compensation accrual rabbi trust	266,000	302,000
Restructuring	65,000
Total liabilities	331,000	302,000
Level 1
Assets:
Cash equivalents and restricted cash - Money market mutual funds	76,248,000	81,159,000
Trading securities held in a rabbi trust	264,000	302,000
Total assets	76,512,000	81,461,000
Liabilities:
Deferred compensation accrual rabbi trust	266,000	302,000
Total liabilities	266,000	302,000
Level 3
Liabilities:
Total liabilities	$ 65,000