Employee Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2014	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Assets contributed to 401(k) Plan					$ 7,900
Restricted investments	$ 5,653		$ 5,653			$ 7,072
401(k) Plan distribution period (in years)			5 years
Compensation expense for assets allocated to participants			$ 1,400	$ 900
Gain on allocated asset (less than)	$ 100	$ 100	$ 100	$ 100