Employee Benefits (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Employee Stock Ownership Plan and Trust (ESOP) [Member]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Additional shares contributed to ESOP (in shares)			58,000
Shares released from trust (in shares)	58,200		58,200
Total remaining balance of shares in the ESOP (in shares)	200		200
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 41	$ 0	$ 82
Interest cost	55	65	109	130
Amortization of prior service cost	0	0	0	0
Actuarial net loss	184	58	368	115
Net periodic benefit cost (credit)	239	164	477	327
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0	0
Interest cost	1	7	8	15
Amortization of prior service cost	(29)	(755)	(58)	(1,509)
Actuarial net loss	328	488	762	1,023
Net periodic benefit cost (credit)	$ 300	$ (260)	712	$ (471)
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]
Contributions by employer on behalf of employees			500
Estimated future employer contributions in current fiscal year			1,000
Supplemental Executive Retirement Plan [Member]
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]
Employer discretionary contribution amount			$ 500