Employee Benefit and Deferred Compensation Plans (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Pension Benefits
Plan expense for noncontributory benefit pension plan and post-retirement health and life plans
Service cost	$ 0	$ 0
Interest cost	318	188
Expected return on plan assets	(539)	(311)
Prior service cost recognized	0	0
Recognized actuarial loss	45	97
Net periodic benefit cost (return)	(176)	(26)
Other Benefits
Plan expense for noncontributory benefit pension plan and post-retirement health and life plans
Service cost	6	7
Interest cost	23	12
Expected return on plan assets	0	0
Prior service cost recognized	0	0
Recognized actuarial loss	27	19
Net periodic benefit cost (return)	$ 56	$ 38