Employee Benefits - Benefit Plan (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Benefit Plan
Percentage of participant's contribution matched by Company			100.00%
Company contributions	$ 237	$ 196	$ 721	$ 577
Maximum
Benefit Plan
Percentage of participant's salary matched by Company			6.00%