Consolidated Statements of Shareholders' Equity (USD $) In Thousands, unless otherwise specified	Total	Preferred Stock	Common Stock	Paid-in Capital in Excess of par	Accumulated Other Comprehensive Income/(Loss)	Retained Earnings
Balances at Dec. 31, 2011	$ 236,661	$ 31,915	$ 91	$ 56,842	$ (8,891)	$ 156,704
Balances (in shares) at Dec. 31, 2011			9,110
Increase (Decrease) in Shareholders' Equity
Net income (loss)	(676)					(676)
Unrealized gain from derivative instruments, net of tax expense of $401 and $644 for the nine months ended September 30, 2013 and September 30, 2012, respectively	1,116				1,116
Reclassification adjustment for losses included in net income, net of tax expense of $3,733	6,410				6,410
Preferred stock dividends paid	(2,346)					(2,346)
Shares repurchased	(1,976)		(2)	(1,974)
Shares repurchased (in shares)			(156)
Shares issued under stock compensation plans	1,312		4	1,308
Shares issued under stock compensation plans (in shares)			440
Cancellation of restricted stock units in satisfaction of withholding tax	(884)			(884)
Cancellation of restricted stock units in satisfaction of withholding tax (in shares)			(71)
Stock-based compensation, net of forfeitures	2,346			2,346
Excess tax benefit from stock-based compensation	607			607
Balances at Sep. 30, 2012	242,570	31,915	93	58,245	(1,365)	153,682
Balances (in shares) at Sep. 30, 2012			9,323
Balances at Dec. 31, 2012	199,553		87	47,785	(1,230)	152,911
Balances (in shares) at Dec. 31, 2012			8,716
Increase (Decrease) in Shareholders' Equity
Net income (loss)	9,073					9,073
Unrealized gain from derivative instruments, net of tax expense of $401 and $644 for the nine months ended September 30, 2013 and September 30, 2012, respectively	692				692
Shares repurchased	(5,258)		(3)	(5,255)
Shares repurchased (in shares)			(354)
Shares issued under stock compensation plans	586		2	584
Shares issued under stock compensation plans (in shares)			182
Cancellation of restricted stock units in satisfaction of withholding tax	(738)		(1)	(737)
Cancellation of restricted stock units in satisfaction of withholding tax (in shares)			(51)
Stock-based compensation, net of forfeitures	2,573			2,573
Balances at Sep. 30, 2013	$ 206,481		$ 85	$ 44,950	$ (538)	$ 161,984
Balances (in shares) at Sep. 30, 2013			8,493