Stock Plans (Options Outstanding) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Shares Subject to Option [Roll forward]
Balance at beginning of period (in shares)	83,000
Options canceled, forfeited or lapsed (in shares)	(33,000)
Balance at end of period (in shares)	50,000	83,000
Exercisable at end of period (in shares)	50,000	83,000	83,000
Weighted Average Option Price Per Share [Abstract]
Balance at beginning of period (in dollars per share)	$ 13.23	$ 13.23
Options canceled, forfeited or lapsed (in dollars per share)	12.96
Balance at end of period (in dollars per share)	$ 13.40	$ 13.23
Weighted Average Remaining Life in Years [Abstract]
Weighted Average Remaining Life in Years	0 years	9 months 18 days