Amount of gain (loss) related to change in benefit obligation resulting from changes in actuarial assumptions, for example, but not limited to, interest, mortality, employee turnover, salary, and temporary deviation from the substantive plan.

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The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation.

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Amount of contributions made by the employer to defined benefit plans.

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The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

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The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.

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Amount of employer's best estimate of contributions expected to be paid to the plan in the current remaining fiscal period.

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Amount of discretionary contributions made by an employer to a defined contribution plan.

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This item represents the number of shares provided to the Employee Stock Ownership Plan (ESOP) during the period.

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Sum of the allocated, committed-to-be-released and suspense shares of the entity held by the plan.

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Employee Benefits (Details) - USD ($) $ in Thousands		1 Months Ended	3 Months Ended		9 Months Ended
Employee Benefits (Details) - USD ($) $ in Thousands	Oct. 30, 2015	Mar. 31, 2016	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Employee Stock Ownership Plan and Trust (ESOP) [Member]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Additional shares contributed to ESOP (in shares)					59,200
Shares released from trust (in shares)			59,200		59,200
Total remaining balance of shares in the ESOP (in shares)			200		200
Postretirement Benefits [Member]
Net Periodic benefit costs related to retirement plans [Abstract]
Service cost			$ 0	$ 0	$ 0	$ 0
Interest cost			4	12	10	20
Amortization of prior service cost			(14)	(27)	(41)	(85)
Actuarial net loss			194	382	584	1,144
Net periodic benefit cost			184	367	553	1,079
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]
Contributions by employer on behalf of employees					700
Estimated future employer contributions in current fiscal year					1,000
Supplemental Executive Retirement Plan [Member]
Net Periodic benefit costs related to retirement plans [Abstract]
Net periodic benefit cost			$ 0	$ 400	$ 0	$ 900
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]
Contributions by employer on behalf of employees	$ 7,600
Employer discretionary contribution amount		$ 300