SUPPLEMENTAL CASH FLOW INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Cash paid for:
Interest	$ 1,627	$ 1,691
Income taxes, net	1,924	1,158
Non-cash investing and financing transactions:
Property, equipment, and leasehold improvements accrued in accounts payable and other long-term liabilities	6,949	913
Capitalized lease obligations incurred	306
Dividends declared but not yet paid	$ 3,251	$ 1,803	$ 3,231