INVESTMENT SECURITIES (Tables)

6 Months Ended

Mar. 31, 2018

Investments, Debt and Equity Securities [Abstract]

Summary of amortized cost, estimated fair value and related unrealized gains and losses on securities available for sale

The amortized cost, estimated fair value and related unrealized gains and losses on securities available for sale and held to maturity as of March 31, 2018 and September 30, 2017, respectively, were as follows:

Available for sale securities	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
March 31, 2018
U.S. government agency obligations	$	37,928	$	8	$	1,020	$	36,916
Obligations of states and political subdivisions	35,563		15		609		34,969
Mortgage-backed securities	42,095		30		1,056		41,069
Agency securities	125		110		2		233
Corporate debt securities	5,377		—		250		5,127
Total available for sale securities	$	121,088	$	163	$	2,937	$	118,314
September 30, 2017
U.S. government agency obligations	$	18,454	$	35	$	448	$	18,041
Obligations of states and political subdivisions	35,656		271		132		35,795
Mortgage-backed securities	36,661		124		311		36,474
Agency Securities	147		83		—		230
Corporate debt securities	5,410		—		67		5,343
Total available for sale securities	$	96,328	$	513	$	958	$	95,883

Held-to-maturity securities

Held to maturity securities	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
March 31, 2018
Obligations of states and political subdivisions	$	1,309	$	—	$	3	$	1,306
Mortgage-backed securities	3,704		47		16		3,735
Total held to maturity securities	$	5,013	$	47	$	19	$	5,041
September 30, 2017
Obligations of states and political subdivisions	$	1,311	$	17	$	—	$	1,328
Mortgage-backed securities	4,142		136		1		4,277
Total held to maturity securities	$	5,453	$	153	$	1	$	5,605

	March 31, 2018				September 30, 2017
Held to maturity securities	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Due after one year through five years	$	1,309	$	1,306	$	1,311	$	1,328
Mortgage backed securities	3,704		3,735		4,142		4,277
Total held to maturity securities	$	5,013	$	5,041	$	5,453	$	5,605

	Less than 12 Months				12 Months or More				Total
Held to maturity securities	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
March 31, 2018
Obligations of states and political subdivisions	$	1,131	$	3	$	—	$	—	$	1,131	$	3
Mortgage-backed securities	1,571		16		—		—		1,571		16
Total	$	2,702	$	19	$	—	$	—	$	2,702	$	19
September 30, 2017
Obligations of states and political subdivisions	$	—	$	—	$	—	$	—	$	—	$	—
Mortgage-backed securities	406		1		—		—		406		1
Total	$	406	$	1	$	—	$	—	$	406	$	1

Available-for-sale securities

	March 31, 2018				September 30, 2017
Available for sale securities	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Due in one year or less	$	1,378	$	1,372	$	160	$	160
Due after one year through five years	14,668		14,501		15,008		15,056
Due after five years through ten years	43,956		42,694		30,586		30,330
Due after ten years	18,866		18,444		13,766		13,633
	$	78,868	$	77,011	$	59,520	$	59,179
Mortgage backed securities	42,095		41,069		36,661		36,474
Securities without contractual maturities	125		234		147		230
Total available for sale securities	$	121,088	$	118,314	$	96,328	$	95,883

Available for sale securities with unrealized losses

Securities with unrealized losses at March 31, 2018 and September 30, 2017, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, were as follows:

	Less than 12 Months				12 Months or More				Total
Available for sale securities	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
March 31, 2018
U.S. government agency obligations	$	25,787	$	310	$	10,471	$	710	$	36,258	$	1,020
Obligations of states and political subdivisions	28,889		443		3,319		166		32,208		609
Mortgage backed securities	29,358		626		9,288		430		38,646		1,056
Agency securities	20		2		—		—		20		2
Corporate debt securities	5,127		250		—		—		5,127		250
Total	$	89,181	$	1,631	$	23,078	$	1,306	$	112,259	$	2,937
September 30, 2017
U.S. government agency obligations	$	8,296	$	186	$	6,932	$	262	$	15,228	$	448
Obligations of states and political subdivisions	8,170		62		3,701		70		11,871		132
Mortgage backed securities	14,167		96		9,753		215		23,920		311
Corporate debt securities	5,343		67		—		—		5,343		67
Total	$	35,976	$	411	$	20,386	$	547	$	56,362	$	958