Defined Benefit Plan (Details Textual) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Defined Benefit Plan (Textual) [Abstract]
Employer contributions	$ 0.2		$ 0.3
Additional employer contributions, expected to be paid during the remainder of fiscal year		$ 0.2