Shareholders' Equity (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Stockholders' Equity Note [Abstract]
Net income (loss)	$ (557)	$ 930	$ (1,872)	$ 3,167	$ 3,063
Dividends paid			(378)		(452)
Other comprehensive income, net of tax	$ 282	$ 203	$ 1,238	$ 2,410	$ 482