Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2015

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

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

	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
Interest cost	$	571		$	590		$	1,143		$	1,180
Expected return on plan assets	(800		)	(776		)	(1,599		)	(1,552		)
Amortization of net loss	357			80			714			160
Total net periodic pension expense (income)	$	128		$	(106	)	$	258		$	(212	)