Retirement Plan (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Balance at the beginning	$ 29	$ 21
Service cost	0	7
Interest cost	0	1
Actuarial loss and other	(1)	0
Balance at the ending	$ 28	$ 29