FAIR VALUE - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) (Fair Value, Measurements, Recurring, USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Fair Value, Inputs, Level 1
Assets measured at fair value:
Other assets - Equity instruments	$ 44	$ 168
Total assets measured at fair value	3,048	13,207
Liabilities measured at fair value:
Other liabilities - Deferred compensation	44	168
Total liabilities measured at fair value	44	168
Fair Value, Inputs, Level 1 | Money Market Funds
Assets measured at fair value:
Cash equivalents - Money market funds	3,004	13,039
Fair Value Disclosure, Total
Assets measured at fair value:
Other assets - Equity instruments	44	168
Total assets measured at fair value	3,048	13,207
Liabilities measured at fair value:
Other liabilities - Deferred compensation	44	168
Total liabilities measured at fair value	44	168
Fair Value Disclosure, Total | Money Market Funds
Assets measured at fair value:
Cash equivalents - Money market funds	$ 3,004	$ 13,039