COMMITMENTS AND CONTINGENCIES (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Future minimum lease payments, Capital Lease
2013	$ 2,135
2014	2,346
2015	2,496
2016	2,474
2017	1,916
Thereafter	14,829
Total future minimum lease payments	26,196
Less: amount representing interest	(6,583)
Present value of future minimum lease payments	19,613
Less: current portion	(1,000)	(676)
Long-term capital lease obligation	18,613	2,497
Future minimum lease payments, Other Operating Leases
2013	1,653
2014	944
2015	910
2016	910
2017	910
Thereafter	683
Total future minimum lease payments	6,010
Other Operating Leases, Affiliates
Future minimum lease payments, Other Operating Leases
2013	240
Total future minimum lease payments	240
Other Operating Leases, Other
Future minimum lease payments, Other Operating Leases
2013	1,413
2014	944
2015	910
2016	910
2017	910
Thereafter	683
Total future minimum lease payments	$ 5,770