Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2016

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

The following table represents the components of net periodic pension expense:

	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015
Interest cost	$	571		$	571		$	1,142		$	1,143
Expected return on plan assets	(697		)	(800		)	(1,394		)	(1,599		)
Amortization of net loss	384			357			768			714
Total net periodic pension expense	$	258		$	128		$	516		$	258