Employee Benefits (Details) (USD $)	9 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended
	Sep. 30, 2014 Employee Stock Ownership Plan and Trust (ESOP) [Member]	Sep. 30, 2014 Pension Benefits [Member]	Sep. 30, 2013 Pension Benefits [Member]	Sep. 30, 2014 Pension Benefits [Member]	Sep. 30, 2013 Pension Benefits [Member]	Sep. 30, 2014 Postretirement Benefits [Member]	Sep. 30, 2013 Postretirement Benefits [Member]	Sep. 30, 2014 Postretirement Benefits [Member]	Sep. 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	$ 123,000	$ 135,000	$ 1,000	$ 0	$ 1,000	$ 1,000
Interest cost		65,000	59,000	195,000	176,000	7,000	9,000	22,000	28,000
Amortization of prior service cost		0	7,000	0	21,000	(755,000)	(1,085,000)	(2,264,000)	(3,259,000)
Actuarial net loss		57,000	172,000	172,000	517,000	513,000	609,000	1,535,000	1,825,000
Net periodic benefit cost (credit)		163,000	283,000	490,000	849,000	(234,000)	(467,000)	(706,000)	(1,405,000)
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]
Contributions by employer on behalf of employees								600,000
Estimated future employer contributions in current fiscal year								900,000
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