Changes in Shareholders' Equity (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Stockholders' Equity Note [Abstract]
Net loss	$ (7,306,000)	$ (4,945,000)	$ (6,775,000)	$ (3,950,000)
Cash dividends			494,000	740,000
Other comprehensive income (loss), net of tax	$ (445,000)	$ 362,000	$ (83,000)	$ 230,000