Regulatory Matters (Tables)

12 Months Ended

Jun. 30, 2018

Regulatory Matters [Abstract]

Compliance with Regulatory Capital Requirements under Banking Regulations

(Dollars in thousands)	Actual					For Capital Adequacy Purposes					To Be Well Capitalized Under Prompt Corrective Action Provisions					Capital Conservation Buffer
The Bank of Greene County	Amount		Ratio			Amount		Ratio			Amount		Ratio			Actual			Required
As of June 30, 2018:
Total risk-based capital	$	102,549		15.5	%	$	53,024		8.0	%	$	66,280		10.0	%		7.472	%		1.875	%
Tier 1 risk-based capital		94,148		14.2			39,768		6.0			53,024		8.0			8.205			1.875
Common equity tier 1 capital		94,148		14.2			29,826		4.5			43,082		6.5			9.705			1.875
Tier 1 leverage ratio		94,148		8.2			45,789		4.0			57,236		5.0			4.225			1.875
As of June 30, 2017:
Total risk-based capital	$	87,719		15.8	%	$	44,433		8.0	%	$	55,542		10.0	%		7.794	%		1.250	%
Tier 1 risk-based capital		80,671		14.5			33,325		6.0			44,433		8.0			8.525			1.250
Common equity tier 1 capital		80,671		14.5			24,994		4.5			36,102		6.5			10.024			1.250
Tier 1 leverage ratio		80,671		8.5			38,056		4.0			47,571		5.0			4.479			1.250
Greene County Commercial Bank
As of June 30,2018:
Total risk-based capital	$	40,286		47.1	%	$	6,837		8.0	%	$	8,546		10.0	%		39.139	%		1.875	%
Tier 1 risk-based capital		40,286		47.1			5,128		6.0			6,837		8.0			41.139			1.875
Common equity tier 1 capital		40,286		47.1			3,846		4.5			5,555		6.5			42.639			1.875
Tier 1 leverage ratio		40,286		9.1			17,747		4.0			22,184		5.0			5.080			1.875
As of June 30, 2017:
Total risk-based capital	$	30,095		40.1	%	$	6,011		8.0	%	$	7,514		10.0	%		32.053	%		1.250	%
Tier 1 risk-based capital		30,095		40.1			4,508		6.0			6,011		8.0			34.053			1.250
Common equity tier 1 capital		30,095		40.1			3,381		4.5			4,884		6.5			35.550			1.250
Tier 1 leverage ratio		30,095		9.6			12,508		4.0			15,635		5.0			5.624			1.250