Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2016

Compensation and Retirement Disclosure [Abstract]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

The net periodic benefit cost for the Corporation’s Pension Plan consisted of the following components:

	Three months ended March 31
	2016			2015
	(in thousands)
Service cost (1)	$	150		$	145
Interest cost	881			851
Expected return on plan assets	(726		)	(752		)
Net amortization and deferral	782			782
Net periodic benefit cost	$	1,087		$	1,026

(1) Service cost was related to administrative costs associated with the plan and was not due to the accrual of additional participant benefits.

The net periodic cost (benefit) of the Corporation’s Postretirement Plan consisted of the following components:

	Three months ended March 31
	2016			2015
	(in thousands)
Interest cost	38			52
Net accretion and deferral	(65		)	(65		)
Net periodic benefit	$	(27	)	$	(13	)