SECURITIES (Tables)

12 Months Ended

Sep. 30, 2018

Investments, Debt and Equity Securities [Abstract]

Securities available for sale at September 30, 2018 and 2017 were as follows:



Available For Sale			GROSS		GROSS
	AMORTIZED		UNREALIZED		UNREALIZED			FAIR
At September 30, 2018	COST		GAINS		(LOSSES)			VALUE
	(Dollars in Thousands)
Debt securities
Small business administration securities	$	45,591	$	1	$	(1,255	)	$	44,337
Obligation of states and political subdivisions	17,154		49		(293		)	16,910
Non-bank qualified obligations of states and political subdivisions	1,140,884		826		(31,825		)	1,109,885
Asset-backed securities	310,700		2,585		(257		)	313,028
Mortgage-backed securities	378,301		—		(14,236		)	364,065
Total debt securities	1,892,630		3,461		(47,866		)	1,848,225
Common equities and mutual funds	3,172		635		(7		)	3,800
Total available for sale securities	$	1,895,802	$	4,096	$	(47,873	)	$	1,852,025



	AMORTIZED		GROSS UNREALIZED		GROSS UNREALIZED			FAIR
At September 30, 2017	COST		GAINS		(LOSSES)			VALUE
	(Dollars in Thousands)
Debt securities
Small business administration securities	$	57,046	$	825	$	—		$	57,871
Non-bank qualified obligations of states and political subdivisions	938,883		14,983		(3,037		)	950,829
Asset-backed securities	94,451		2,381		—			96,832
Mortgage-backed securities	588,918		1,259		(3,723		)	586,454
Total debt securities	1,679,298		19,448		(6,760		)	1,691,986
Common equities and mutual funds	1,009		436		—			1,445
Total available for sale securities	$	1,680,307	$	19,884	$	(6,760	)	$	1,693,431

Securities Held to Maturity

Securities held to maturity at September 30, 2018 and 2017 were as follows:



Held to Maturity			GROSS		GROSS
	AMORTIZED		UNREALIZED		UNREALIZED			FAIR
At September 30, 2018	COST		GAINS		(LOSSES)			VALUE
	(Dollars in Thousands)
Debt securities
Non-bank qualified obligations of states and political subdivisions	$	164,304	$	—	$	(10,758	)	$	153,546
Mortgage-backed securities	7,850		—		(422		)	7,428
Total held to maturity securities	$	172,154			$	(11,180	)	$	160,974



	AMORTIZED		GROSS UNREALIZED		GROSS UNREALIZED			FAIR
At September 30, 2017	COST		GAINS		(LOSSES)			VALUE
	(Dollars in Thousands)
Debt securities
Obligations of states and political subdivisions	$	19,247	$	157	$	(36	)	$	19,368
Non-bank qualified obligations of states and political subdivisions	430,593		4,744		(2,976		)	432,361
Mortgage-backed securities	113,689		—		(1,233		)	112,456
Total held to maturity securities	$	563,529	$	4,901	$	(4,245	)	$	564,185

Gross Unrealized Losses and Fair Value of Securities Available for Sale in Continuous Unrealized Loss Position

Gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in continuous unrealized loss position at September 30, 2018, and 2017, were as follows:



Available For Sale	LESS THAN 12 MONTHS					OVER 12 MONTHS					TOTAL
At September 30, 2018	Fair Value		Unrealized (Losses)			Fair Value		Unrealized (Losses)			Fair Value		Unrealized (Losses)
	(Dollars in Thousands)
Debt securities
Small business administration securities	$	43,097	$	(1,255	)	$	—	$	—		$	43,097	$	(1,255	)
Obligations of states and political subdivisions	11,036		(279		)	881		(14		)	11,917		(293		)
Non-bank qualified obligations of states and political subdivisions	626,693		(13,539		)	358,095		(18,286		)	984,788		(31,825		)
Asset-backed securities	146,638		(257		)	—		—			146,638		(257		)
Mortgage-backed securities	121,217		(3,292		)	242,849		(10,944		)	364,066		(14,236		)
Total debt securities	948,681		(18,622		)	601,825		(29,244		)	1,550,506		(47,866		)
Common equities and mutual funds	1,818		(7		)	—		—			1,818		(7		)
Total available for sale securities	$	950,499	$	(18,629	)	$	601,825	$	(29,244	)	$	1,552,324	$	(47,873	)



	LESS THAN 12 MONTHS					OVER 12 MONTHS					TOTAL
At September 30, 2017	Fair Value		Unrealized (Losses)			Fair Value		Unrealized (Losses)			Fair Value		Unrealized (Losses)
	(Dollars in Thousands)
Debt securities
Non-bank qualified obligations of states and political subdivisions	$	280,900	$	(2,887	)	$	5,853	$	(150	)	$	286,753	$	(3,037	)
Mortgage-backed securities	237,897		(1,625		)	100,287		(2,098		)	338,184		(3,723		)
Total available for sale securities	$	518,797	$	(4,512	)	$	106,140	$	(2,248	)	$	624,937	$	(6,760	)

Gross Unrealized Losses and Fair Value of Securities Held to Maturity in Continuous Unrealized Loss Position



Held To Maturity	LESS THAN 12 MONTHS					OVER 12 MONTHS					TOTAL
At September 30, 2018	Fair Value		Unrealized (Losses)			Fair Value		Unrealized (Losses)			Fair Value		Unrealized (Losses)
	(Dollars in Thousands)
Debt securities
Non-bank qualified obligations of states and political subdivisions	$	6,178	$	(287	)	$	147,368	$	(10,471	)	$	153,546	$	(10,758	)
Mortgage-backed securities	—		—			7,428		(422		)	7,428		(422		)
Total held to maturity securities	6,178		(287		)	154,796		(10,893		)	160,974		(11,180		)



	LESS THAN 12 MONTHS					OVER 12 MONTHS					TOTAL
At September 30, 2017	Fair Value		Unrealized (Losses)			Fair Value		Unrealized (Losses)			Fair Value		Unrealized (Losses)
	(Dollars in Thousands)
Debt securities
Obligations of states and political subdivisions	$	1,364	$	(6	)	$	4,089	$	(30	)	$	5,453	$	(36	)
Non-bank qualified obligations of states and political subdivisions	202,018		(2,783		)	6,206		(193		)	208,224		(2,976		)
Mortgage-backed securities	112,456		(1,233		)	—		—			112,456		(1,233		)
Total held to maturity securities	$	315,838	$	(4,022	)	$	10,295	$	(223	)	$	326,133	$	(4,245	)

Amortized Cost and Fair Value of Debt Securities by Contractual Maturity

The amortized cost and fair value of debt securities by contractual maturity are shown below. Certain securities have call features which allow the issuer to call the security prior to maturity. Expected maturities may differ from contractual maturities in MBS because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Therefore, MBS are not included in the maturity categories in the following maturity summary. The expected maturities of certain SBA securities may differ from contractual maturities because the borrowers may have the right to prepay the obligation. However, certain prepayment penalties may apply.



Available For Sale	AMORTIZED COST		FAIR VALUE
At September 30, 2018	(Dollars in Thousands)

Due in one year or less	$	2,532	$	2,529
Due after one year through five years	41,415		41,504
Due after five years through ten years	352,099		350,143
Due after ten years	1,118,283		1,089,984
	1,514,329		1,484,160
Mortgage-backed securities	378,301		364,065
Common equities and mutual funds	3,172		3,800
Total available for sale securities	$	1,895,802	$	1,852,025



	AMORTIZED COST		FAIR VALUE
At September 30, 2017	(Dollars in Thousands)

Due in one year or less	$	—	$	—
Due after one year through five years	36,586		37,674
Due after five years through ten years	347,831		358,198
Due after ten years	705,963		709,660
	1,090,380		1,105,532
Mortgage-backed securities	588,918		586,454
Common equities and mutual funds	1,009		1,445
Total available for sale securities	$	1,680,307	$	1,693,431



Held To Maturity	AMORTIZED COST		FAIR VALUE
At September 30, 2018	(Dollars in Thousands)

Due after ten years	164,304		153,546
	164,304		153,546
Mortgage-backed securities	7,850		7,428
Total held to maturity securities	$	172,154	$	160,974



	AMORTIZED COST		FAIR VALUE
At September 30, 2017	(Dollars in Thousands)

Due in one year or less	$	1,483	$	1,480
Due after one year through five years	17,926		18,160
Due after five years through ten years	144,996		147,832
Due after ten years	285,435		284,257
	449,840		451,729
Mortgage-backed securities	113,689		112,456
Total held to maturity securities	$	563,529	$	564,185

Summary of Activities Related to Sale of Securities Available for Sale

Activities related to the sale of securities are summarized below.



	2018			2017			2016
Year ended	(Dollars in Thousands)
Available For Sale
Proceeds from sales	$	596,758		$	457,306		$	285,508
Gross gains on sales	2,551			4,091			1,459
Gross losses on sales	10,728			4,628			1,785
Net loss on available for sale securities	(8,177		)	(537		)	(326		)

Held To Maturity
Net carrying amount of securities sold	$	—		$	5,826		$	—
Gross realized gain on sales	—			92			—
Gross realized losses on sales	—			48			—
Net gain on held to maturity securities	—			44			—