Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Change in Projected Benefit Obligation
Projected benefit obligation, beginning of period			$ 25,826	$ 20,032	$ 20,032
Service cost	$ 293	$ 205	586	409	821
Interest cost	271	$ 234	541	468	935
Actuarial loss			0		4,324
Benefits paid			(272)		(286)
Projected benefit obligation, end of period	26,681		26,681		25,826
Change in Plan Assets
Plan assets at fair value, beginning of period			0	$ 0	0
Company contributions			272		286
Benefits paid			(272)		(286)
Plan assets at fair value, end of period	0		0		0
Unfunded Status of the Plan	$ (26,681)		$ (26,681)		$ (25,826)