401(K) Savings Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
401(K) Savings Plan [Abstract]
Employer contribution percentage (in hundredths)	4.00%
Employer contribution to the plan	$ 0.3	$ 0.2	$ 0.2