Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash flows from operating activities:
Cash provided by operating activities	$ 14,756	$ 11,556
Cash flows from investing activities:
Net cash used in investing activities	(2,576)	(2,626)
Acquisition of property and equipment	(2,502)	(2,522)
Other investing activities	(74)	(104)
Cash flows from financing activities:
Proceeds from long-term debt		92,100
Net cash used in financing activities	(10,330)	(8,264)
Payments on long-term debt	(10,250)	(99,100)
Payments for debt issuance costs		(1,147)
Purchase of shares held in treasury	(80)	(117)
Net increase in cash and cash equivalents	1,850	666
Cash and cash equivalents, beginning of period	6,991	12,197
Cash and cash equivalents, end of period	$ 8,841	$ 12,863