CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	Common Stock Issued	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)
Balance at Dec. 31, 2011	$ 241,828	$ 501	$ 475,013	$ (244,495)	$ 10,809
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	27,590			27,590
Other comprehensive loss	2,293				2,293
Exercise of stock options	932	1	931
Equity-based compensation	7,892		7,892
Treasury stock purchase and retirement	(27,892)	(32)	(27,860)
Redemption of restricted shares, net	(2,259)	7	(2,266)
Income tax deficiency from equity awards	(89)		(89)
Balance at Dec. 31, 2012	250,295	477	453,621	(216,905)	13,102
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	18,316			18,316
Other comprehensive loss	(1,933)				(1,933)
Exercise of stock options	0
Equity-based compensation	7,587		7,587
Treasury stock purchase and retirement	(1,381)	(1)	(1,380)
Redemption of restricted shares, net	(2,380)	7	(2,387)
Income tax deficiency from equity awards	472		472
Balance at Dec. 31, 2013	270,976	483	457,913	(198,589)	11,169
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	17,064			17,064
Other comprehensive loss	(17,714)				(17,714)
Exercise of stock options	963	1	962
Equity-based compensation	10,179		10,179
Treasury stock purchase and retirement	(24,595)	(19)	(24,576)
Redemption of restricted shares, net	(2,426)	10	(2,436)
Income tax deficiency from equity awards	543		543
Balance at Dec. 31, 2014	$ 254,990	$ 475	$ 442,585	$ (181,525)	$ (6,545)