Shareholders' Equity (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Shareholders' Equity [Abstract]
Shareholders' equity, beginning of period	$ 14,535	$ 26,153
Net Income (loss)	(833)	(1,234)
Dividends paid on common stock	(1,664)	(1,567)
Dividends paid on preferred stock	(6)	(6)
Stock-based compensation	218	192
Treasury stock purchases	(62)	(725)
Exercise of stock options		675
Changes in pension and postretirement benefit plans	93	129
Shareholders' equity, end of period	$ 12,281	$ 23,617