Pension Plans (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Service cost - benefits earned during the period	$ 80		$ 136
Interest cost	435	369	836	814
Expected return on plan assets	(701)	(574)	(1,390)	(1,159)
Amortization of net (gain)/loss	(56)	15	(110)	18
Net periodic pension cost	(242)	(190)	(528)	(327)
Pension Plan [Member]
Interest cost	382	302	731	680
Expected return on plan assets	(701)	(574)	(1,390)	(1,159)
Amortization of net (gain)/loss		15		18
Net periodic pension cost	(319)	(257)	(659)	(461)
SERP [Member]
Service cost - benefits earned during the period	80		136
Interest cost	53	67	105	134
Amortization of net (gain)/loss	(56)		(110)
Net periodic pension cost	$ 77	$ 67	$ 131	$ 134