Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2017

Regulatory Capital Requirements [Abstract]

Regulatory Capital Levels And Related Ratios

Mid Penn maintained the following regulatory capital levels, leverage ratios, and risk-based capital ratios as of December 31, 2017, and December 31, 2016, as follows:

(Dollars in thousands)	Capital Adequacy
											To Be Well-Capitalized
											Under Prompt
						Minimum Capital					Corrective
	Actual					Required (1)					Action Provisions
	Amount		Ratio			Amount		Ratio			Amount		Ratio
Corporation
As of December 31, 2017
Tier 1 Capital (to Average Assets)	$	74,417		6.5	%	$	45,857		4.00	%	$	N/A	N/A
Common Equity Tier 1 Capital (to Risk Weighted Assets)		74,417		8.4	%		50,661		5.75	%	N/A		N/A
Tier 1 Capital (to Risk Weighted Assets)		74,417		8.4	%		63,877		7.25	%	N/A		N/A
Total Capital (to Risk Weighted Assets)		99,466		11.3	%		81,498		9.25	%	N/A		N/A

Bank
As of December 31, 2017
Tier 1 Capital (to Average Assets)	$	88,294		7.7	%	$	45,846		4.00	%	$	57,308		5.0	%
Common Equity Tier 1 Capital (to Risk Weighted Assets)		88,294		10.0	%		50,661		5.75	%		57,269		6.5	%
Tier 1 Capital (to Risk Weighted Assets)		88,294		10.0	%		63,877		7.25	%		70,485		8.0	%
Total Capital (to Risk Weighted Assets)		96,005		10.9	%		81,498		9.25	%		88,106		10.0	%

Corporation
As of December 31, 2016
Tier 1 Capital (to Average Assets)	$	70,431		6.8	%	$	41,595		4.00	%	$	N/A	N/A
Common Equity Tier 1 Capital (to Risk Weighted Assets)		70,431		9.1	%		39,641		5.125	%	N/A		N/A
Tier 1 Capital (to Risk Weighted Assets)		70,431		9.1	%		51,244		6.625	%	N/A		N/A
Total Capital (to Risk Weighted Assets)		85,148		11.0	%		66,714		8.625	%	N/A		N/A

Bank
As of December 31, 2016
Tier 1 Capital (to Average Assets)	$	77,026		7.4	%	$	41,568		4.00	%	$	51,960		5.0	%
Common Equity Tier 1 Capital (to Risk Weighted Assets)		77,026		10.0	%		39,611		5.125	%		50,239		6.5	%
Tier 1 Capital (to Risk Weighted Assets)		77,026		10.0	%		51,205		6.625	%		61,832		8.0	%
Total Capital (to Risk Weighted Assets)		84,329		10.9	%		66,663		8.625	%		77,291		10.0	%

(1) Minimum amounts and ratios as of December 31, 2017 include the second year phase in of the capital conservation buffer of 1.25 percent required by the Basel III framework. At December 31, 2016, the minimum amounts and ratios included the first year phase in of the capital conservation buffer of 0.625 percent required by the Basel III framework.