Share-Based Compensation (Narrative) (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 USD ($) $ / shares	Dec. 31, 2013 USD ($) $ / shares	May. 07, 2015 shares	May. 31, 2012 shares	May. 31, 2005 shares
Nonemployee director annual stock grants | shares	20,000
Share-based compensation expense | $	$ 2,134	$ 2,020	$ 2,339
Weighted Average Fair Value Per Share, Options granted | $ / shares	$ 4.74	$ 4.93	$ 6.41
Weighted Average Remaining Contractual Life (Years), Options outstanding	3 years 3 months 14 days
Number of Shares Authorized, Available to Issue and Outstanding | shares	2,658,344
Unrecognized compensation cost | $	$ 417
Aggregate Intrinsic Value, Options exercised | $	$ 5,551	$ 465	$ 1,084
Aggregate Intrinsic Value, Per Share, Options exercised | $ / shares	$ 12.69	$ 15.51	$ 19.71
2012 Plan [Member]
Shares available for grants | shares	1,916,668			3,000,000	1,500,000
Stock Option Plan, Award Vesting Period	5 years
Common stock on date granted term period, years	10
Weighted Average Fair Value Per Share, Options granted | $ / shares	$ 4.73
2005 Plan [Member]
Shares available for grants | shares	0					1,500,000
Stock Option Plan, Award Vesting Period	10 years
Common stock on date granted term period, years	10
Expected To Be Recognized During 2016 [Member]
Unrecognized compensation cost | $	$ 373
Expected To Be Recognized During 2017 [Member]
Unrecognized compensation cost | $	$ 44
Prior To Shareholder Approval of Increase [Member]
Nonemployee director annual stock grants | shares	15,000