Stock Compensation Plans (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units expected to vest or lapse within twelve months	219,000
Restricted stock units expected to vest or lapse in year two	497,500
Restricted stock units expected to vest or lapse in year three	17,000
Share-based compensation	$ 2,539	$ 3,134	$ 3,220
Stock bonus plan shares authorized				250,000
Shares avaibile in stock bonus plan	86,383
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSU available for future issuance	1,146,516
Units outstanding value	$ 6,100
Share price (in dollars per share)	$ 8.32
Value of units vested in the period	$ 2,400	$ 3,000	$ 3,100
Expected share based compensation expense	$ 2,700