Savings Plan (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Matching contributions to savings plan charged to expense [Abstract]
Company matching contributions	$ 0	$ 0	$ 25	$ 30
Employer match percentage	33.00%	33.00%	33.00%	33.00%