Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2016

Employee Benefit Plans Disclosure [Abstract]

Schedule of Changes in Projected Benefit Obligations [Table Text Block]

		Three Months Ended				Six Months Ended
		June 30,				June 30,
		2016		2015		2016		2015
		(in thousands)
Components of net periodic benefit cost:
Interest cost	$	168	$	190		336		367
Expected return on plan assets		(181)		(179)		(362)		(345)
Net amortization loss		79		81		159		156
Net periodic benefit cost	$	66	$	92	$	133	$	178