Employee Benefits - Benefit Plan (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Benefit Plan
Percentage of participant's contribution matched by Company			100.00%
Company contributions	$ 241	$ 194	$ 484	$ 381
Maximum
Benefit Plan
Percentage of participant's salary matched by Company			6.00%