Stock Plans (Stock Option Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Number of Shares
Balance at December 31, 2014	672,000
Granted	322,000	0
Exercised	(19,000)
Cancelled	(44,000)
Balance at December 31, 2015	931,000	672,000
Vested or expected to vest at December 31, 2015	886,000
Exercisable at December 31, 2015	638,000
Weighted Average Exercise Price
Balance at December 31, 2014	$ 12.00
Granted	6.72
Exercised	6.80
Cancelled	11.70
Balance at December 31, 2015	10.19	$ 12.00
Vested or expected to vest at December 31, 2015	10.38
Exercisable at December 31, 2015	$ 11.81
Additional Disclosures
Balance at period end, Weighted Average Remaining Contractual Term (in years)	3 years 10 months 5 days
Balance at period end, Aggregate Intrinsic Value	$ 196
Vested or expected to vest, Weighted Average Contractual Term (in years)	3 years 6 months 27 days
Vested or expected to vest, Aggregate Intrinsic Value	$ 162
Exercisable, Weighted Average Contractual Term (in years)	1 year 4 months 2 days
Exercisable, Aggregate Intrinsic Value	$ 16