Defined Contribution Plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Contribution Plan [Abstract]
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 682	$ 565	$ 487
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	90.00%