Postretirement Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2016

Defined Benefit Postretirement Health And Life Coverage [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Funded Status

The following tables provide a reconciliation of the changes in the Plan’s health and life insurance benefit obligations and fair value of Plan assets for the years ended December 31, 2016 and 2015, and a statement of the funded status at December 31, 2016 and 2015.

(Dollars in thousands)
	December 31,
Change in benefit obligations:	2016			2015
Benefit obligations, January 1	$	572		$	861
Service cost		4			13
Interest cost		23			32
Change in experience		2			(24	)
Change in assumptions		13			(4	)
Change due to plan amendment		—			(244	)
Benefit payments		(74	)		(62	)
Benefit obligations, December 31	$	540		$	572
Change in fair value of plan assets:
Fair value of plan assets, January 1	$	—		$	—
Employer contributions		74			62
Benefit payments		(74	)		(62	)
Fair value of plan assets, December 31	$	—		$	—
Funded status at year end	$	(540	)	$	(572	)

Schedule of Amounts Recognized in Balance Sheet

The amount recognized in the consolidated balance sheet at December 31, 2016 and 2015, is as follows:

(Dollars in thousands)
	2016		2015
Accrued benefit liability	$	540	$	572

Schedule of Amounts Recognized in Other Comprehensive (Loss) Income

The amounts recognized in accumulated other comprehensive (loss) income consist of:

(Dollars in thousands)	December 31,
	2016			2015
Net gain, pretax	$	(31	)	$	(47	)
Net prior service cost, pretax		(209	)		(244	)

Schedule of Net Periodic (Income) Benefit Costs

The components of net periodic postretirement (income) benefit cost for 2016, 2015 and 2014 are as follows:

(Dollars in thousands)
	2016			2015		2014
Service cost	$	4		$	13	$	13
Interest cost		23			32		38
Amortization of prior service cost		(35	)		—		(1	)
Net periodic postretirement (income) benefit cost	$	(8	)	$	45	$	50

Schedule of Assumptions Used

Assumptions used in the measurement of Mid Penn’s benefit obligations at December 31, 2016 and 2015 are as follows:

Weighted-average assumptions:	2016			2015
Discount rate		4.00	%		4.25	%
Rate of compensation increase		3.00	%		3.25	%

Assumptions used in the measurement of Mid Penn’s net periodic benefit cost for the years ended December 31, 2016, 2015 and 2014 are as follows:

Weighted-average assumptions:	2016			2015			2014
Discount rate		4.25	%		4.00	%		4.75	%
Rate of compensation increase		3.25	%		3.00	%		3.75	%

Schedule of Health Care Cost Trend Rates

Assumed health care cost trend rates at December 31, 2016, 2015 and 2014 are as follows:

	2016			2015			2014
Health care cost trend rate assumed for next year		6.00	%		5.50	%		6.50	%
Rate to which the cost trend rate is assumed to decline (the    ultimate trend rate)		5.50	%		5.50	%		5.50	%
Year that the rate reaches the ultimate trend rate	2018			2016			2016

Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates

Assumed health care cost trend rates have a significant effect on the amounts reported for the health care Plans.  At December 31, 2016, a one-percentage-point change in assumed health care cost trend rates would have the following effects:

(Dollars in thousands)	One-Percentage Point
	Increase		Decrease
Effect on total of service and interest cost	$	—	$	—
Effect on accumulated postretirement benefit obligation		3		3

Schedule of Expected Benefit Payments

Mid Penn expects to contribute $73,000 to its life and health benefit Plans in 2017.  The following table shows the estimated benefit payments for future periods.

(Dollars in thousands)
1/1/2017 to 12/31/2017	$	73
1/1/2018 to 12/31/2018		64
1/1/2019 to 12/31/2019		61
1/1/2020 to 12/31/2020		56
1/1/2021 to 12/31/2021		30
1/1/2022 to 12/31/2026		156

Director's Retirement Plan [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Funded Status

The following tables provide a reconciliation of the changes in the directors’ defined benefit Plan’s benefit obligations and fair value of Plan assets for the years ended December 31, 2016 and 2015 and a statement of the status at December 31, 2016 and 2015.  This Plan is unfunded.

(Dollars in thousands)
	December 31,
Change in benefit obligations:	2016			2015
Benefit obligations, January 1	$	1,150		$	1,186
Service cost		34			33
Interest cost		46			45
Actuarial gain		(13	)		(8	)
Change in assumptions		(4	)		(16	)
Benefit payments		(91	)		(90	)
Benefit obligations, December 31	$	1,122		$	1,150
Change in fair value of plan assets:
Fair value of plan assets, January 1	$	—		$	—
Employer contributions		91			90
Benefit payments		(91	)		(90	)
Fair value of plan assets, December 31	$	—		$	—
Funded status at year end	$	(1,122	)	$	(1,150	)

Schedule of Amounts Recognized in Balance Sheet

Amounts recognized in the consolidated balance sheet at December 31, 2016 and 2015 are as follows:

(Dollars in thousands)
	2016		2015
Accrued benefit liability	$	1,122	$	1,150

Schedule of Amounts Recognized in Other Comprehensive (Loss) Income

Amounts recognized in accumulated other comprehensive income (loss) consist of:

(Dollars in thousands)	December 31,
	2016		2015
Net prior service cost, pretax	$	43	$	64
Net loss, pretax		60		77

Schedule of Net Periodic (Income) Benefit Costs

The components of net periodic retirement cost for 2016, 2015 and 2014 are as follows:

(Dollars in thousands)
	2016		2015		2014
Service cost	$	34	$	33	$	33
Interest cost		46		45		51
Amortization of prior-service cost		22		22		22
Net periodic retirement cost	$	102	$	100	$	106

Schedule of Assumptions Used

Assumptions used in the measurement of Mid Penn’s benefit obligations at December 31, 2016 and 2015 are as follows:

Weighted-average assumptions:	2016			2015
Discount rate		4.00	%		4.25	%
Change in consumer price index		2.00	%		2.25	%

Assumptions used in the measurement of Mid Penn’s net periodic benefit cost for the years ended December 31, 2016, 2015 and 2014 are as follows:

Weighted-average assumptions:	2016			2015			2014
Discount rate		4.25	%		4.00	%		4.75	%
Change in consumer price index		2.25	%		2.25	%		2.75	%

Schedule of Expected Benefit Payments

Mid Penn expects to contribute $94,000 to its retirement Plan in 2017.  The following table shows the estimated benefit payments for future periods.

(Dollars in thousands)
1/1/2017 to 12/31/2017	$	94
1/1/2018 to 12/31/2018		96
1/1/2019 to 12/31/2019		96
1/1/2020 to 12/31/2020		98
1/1/2021 to 12/31/2021		108
1/1/2022 to 12/31/2026		464