Employee Benefit Plans (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Components of net pension cost
Pension expense - three and six months ended June 30, (actual)	$ 306	$ 348	$ 613	$ 696
Pension
Components of net pension cost
Service cost - benefits earned during the year			1,179	1,325
Interest costs on projected benefit obligations			956	838
Expected return on plan assets			(1,057)	(957)
Expected administrative expenses			70	40
Amortization of prior service cost			79	79
Amortization of unrecognized net loss			0	66
Net periodic pension expense			1,227	1,391
Pension expense - three and six months ended June 30, (actual)	$ 306	$ 348	$ 613	$ 696