DEBT (Details) (USD $)	Mar. 31, 2013	Dec. 31, 2012	Jun. 30, 2012 second amendment [Member]	Jul. 03, 2012 Third Amendment [Member]
Debt Instrument [Line Items]
line of credit libor floor			1.00%	1.25%
Line of Credit Facility, Maximum Borrowing Capacity			$ 150,000,000	$ 125,000,000
basket limitation for loans and advances to third parties and investments in permitted joint ventures				60,000,000
Revolving credit facility	27,053,000
Senior unsecured notes	225,000,000
Capital leases	1,311,000
long term debt and capital lease obligations, total	253,364,000
Long-term Debt and Capital Lease Obligations, Current	27,992,000	953,000
Long-term Debt and Capital Lease Obligations	225,372,000	225,426,000
Senior notes, fair value disclosure	$ 246,400,000