Stock Plans (Options Outstanding) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Shares Subject to Option [Roll forward]
Balance at beginning of period (in shares)	83,000	540,000	895,000
Options canceled, forfeited or lapsed (in shares)		(457,000)	(355,000)
Balance at end of period (in shares)	83,000	83,000	540,000	895,000
Exercisable at end of period (in shares)	83,000	83,000	540,000
Weighted Average Option Price Per Share [Abstract]
Balance at beginning of period (in dollars per share)	$ 13.23	$ 10.99	$ 9.94
Options canceled, forfeited or lapsed (in dollars per share)		$ 10.59	$ 8.35
Balance at end of period (in dollars per share)	$ 13.23	$ 13.23	$ 10.99	$ 9.94
Weighted Average Remaining Life in Years [Abstract]
Balance at beginning of period	9 months 18 days	1 year 9 months 18 days	10 months 24 days	1 year 3 months 18 days
Balance at end of period	9 months 18 days	1 year 9 months 18 days	10 months 24 days	1 year 3 months 18 days