Consolidated Statement of Stockholders' Equity (USD $) In Thousands, unless otherwise specified	Total	Common Stock [Member]	Preferred Stock Including Additional Paid in Capital [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Dec. 31, 2010	$ 518,878	$ 76,307	$ 58,089	$ 652,288	$ (269,154)	$ 1,348
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income/ (loss) attributable to the Company	(149)	0	0	0	(149)	0
Other comprehensive income (loss), net	(373)	0	0	0	0	(373)
Dividends paid to common shareholders	(761)	0	0	(761)	0	0
Dividends paid to preferred stockholders	(73)	0	0	(73)	0	0
Net proceeds from issuance of:
Shares of common stock	4,881	711	0	4,170	0	0
Shares through incentive stock grants, net of cancellations and forfeitures	0	(22)	0	22	0	0
Amortization of stock compensation and employee stock purchase plan	1,469	0	0	1,469	0	0
Stock options exercised	80	16	0	64	0	0
Tax deficiency from certain stock compensation awards	(1,221)	0	0	(1,221)	0	0
Other equity adjustments	(620)	0	0	(620)	0	0
Ending Balance at Mar. 31, 2011	522,111	77,012	58,089	655,338	(269,303)	975
Beginning Balance at Dec. 31, 2011	566,125	78,023	58,089	656,436	(230,017)	3,594
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income/ (loss) attributable to the Company	9,505	0	0	0	9,505	0
Other comprehensive income (loss), net	(58)	0	0	0	0	(58)
Dividends paid to common shareholders	(776)	0	0	(776)	0	0
Dividends paid to preferred stockholders	(73)	0	0	(73)	0	0
Adjustments to Additional Paid in Capital, Warrant Repurchase	(15,000)	0	0	(15,000)	0	0
Net proceeds from issuance of:
Shares of common stock	557	99	0	458	0	0
Shares through incentive stock grants, net of cancellations and forfeitures	0	7	0	(7)	0	0
Amortization of stock compensation and employee stock purchase plan	1,927	0	0	1,927	0	0
Stock options exercised	184	23	0	161	0	0
Tax deficiency from certain stock compensation awards	(952)	0	0	(952)	0	0
Other equity adjustments	102	0	0	102	0	0
Ending Balance at Mar. 31, 2012	$ 561,541	$ 78,152	$ 58,089	$ 642,276	$ (220,512)	$ 3,536