Employee Benefits (Details) (USD $)	6 Months Ended	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended
	Jun. 30, 2014 Employee Stock Ownership Plan and Trust (ESOP) [Member]	Jun. 30, 2014 Pension Benefits [Member]	Jun. 30, 2013 Pension Benefits [Member]	Jun. 30, 2014 Pension Benefits [Member]	Jun. 30, 2013 Pension Benefits [Member]	Jun. 30, 2014 Postretirement Benefits [Member]	Jun. 30, 2013 Postretirement Benefits [Member]	Jun. 30, 2014 Postretirement Benefits [Member]	Jun. 30, 2013 Postretirement Benefits [Member]	Mar. 31, 2013 Supplemental Executive Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost		$ 41,000	$ 45,000	$ 82,000	$ 90,000	$ 0	$ 0	$ 0	$ 1,000
Interest cost		65,000	58,000	130,000	117,000	7,000	10,000	15,000	19,000
Amortization of prior service cost		0	7,000	0	14,000	(755,000)	(1,087,000)	(1,509,000)	(2,174,000)
Actuarial net loss		58,000	171,000	115,000	345,000	488,000	605,000	1,023,000	1,216,000
Net periodic benefit cost (credit)		164,000	281,000	327,000	566,000	(260,000)	(472,000)	(471,000)	(938,000)
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]
Contributions by employer on behalf of employees								500,000
Estimated future employer contributions in current fiscal year								1,000,000
Employer discretionary contribution amount										$ 400,000
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Additional shares contributed to ESOP (in shares)	58,570
Shares released from trust (in shares)	58,600
Total remaining balance of shares in the ESOP (in shares)	400