Consolidated Statements of Changes in Shareholders' Equity (USD $)	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
Balance at Dec. 31, 2009	$ 110,373,000	$ 234,000	$ 188,930,000	$ 80,564,000	$ (157,041,000)	$ (2,314,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	3,460,000			3,460,000
Other comprehensive income (loss)	(636,000)					(636,000)
Net distribution of Rabbi Trust shares			(447,000)		447,000
Forfeiture of restricted stock awards	4,000		433,000	4,000	(433,000)
Vesting of restricted stock awards	163,000		163,000
Grants of restricted stock awards			(484,000)		484,000
Reclassification of treasury stock issuances of restricted stock at average cost			(1,431,000)		1,431,000
Dividends declared on common stock ($.04 per share)	(436,000)			(436,000)
Balance at Dec. 31, 2010	112,928,000	234,000	187,164,000	83,592,000	(155,112,000)	(2,950,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(10,474,000)			(10,474,000)
Other comprehensive income (loss)	1,024,000					1,024,000
Net distribution of Rabbi Trust shares			(120,000)		120,000
Forfeiture of restricted stock awards	2,000		453,000	2,000	(453,000)
Vesting of restricted stock awards	205,000		205,000
Grants of restricted stock awards			(672,000)		672,000
Dividends declared on common stock ($.04 per share)	(437,000)			(437,000)
Balance at Dec. 31, 2011	103,248,000	234,000	187,030,000	72,683,000	(154,773,000)	(1,926,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	4,665,000			4,665,000
Other comprehensive income (loss)	4,038,000					4,038,000
Net distribution of Rabbi Trust shares			(129,000)		129,000
Amortization of stock based compensation	13,000		13,000
Forfeiture of restricted stock awards	3,000		618,000	3,000	(618,000)
Vesting of restricted stock awards	292,000		318,000		(26,000)
Grants of restricted stock awards			(590,000)		590,000
Dividends declared on common stock ($.04 per share)	(437,000)			(437,000)
Balance at Dec. 31, 2012	$ 111,822,000	$ 234,000	$ 187,260,000	$ 76,914,000	$ (154,698,000)	$ 2,112,000