Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Interest and dividend income
Loans receivable and loans held for sale	$ 9,484	$ 8,840	$ 18,812	$ 17,628
Investment securities	39	68	96	138
Dividends from mutual funds, FHLB stock and other investments	26	12	52	37
Interest-bearing deposits in banks and CDs	741	379	1,364	660
Total interest and dividend income	10,290	9,299	20,324	18,463
Interest expense
Deposits	666	545	1,266	1,088
FHLB borrowings	0	302	0	610
Total interest expense	666	847	1,266	1,698
Net interest income	9,624	8,452	19,058	16,765
Recapture of loan losses	0	(250)	0	(250)
Net interest income after recapture of loan losses	9,624	8,702	19,058	17,015
Non-interest income
Recoveries (other than temporary impairment OTTI) on investment securities	(14)	0	(41)	0
Adjustment for portion of OTTI transferred from other comprehensive income before income taxes	0	0	(5)	0
Net recoveries on investment securities	(14)	0	(36)	0
Service charges on deposits	1,132	1,090	2,310	2,195
ATM and debit card interchange transaction fees	883	793	1,727	1,593
BOLI net earnings	137	136	273	273
Gain on sales of loans, net	470	406	992	1,095
Escrow fees	52	64	112	140
Servicing income on loans sold	117	99	233	196
Other, net	277	263	536	576
Total non-interest income, net	3,082	2,851	6,219	6,068
Non-interest expense
Salaries and employee benefits	4,001	3,755	7,950	7,435
Premises and equipment	799	776	1,567	1,531
Gain on sales of premises and equipment, net	113	0	113	0
Advertising	176	167	386	329
OREO and other repossessed assets, net	91	(12)	204	18
ATM and debit card interchange transaction fees	318	350	648	662
Postage and courier	131	120	237	214
State and local taxes	168	152	329	308
Professional fees	243	199	460	399
Federal Deposit Insurance Corporation (FDIC) insurance	75	107	141	221
Loan administration and foreclosure	92	(1)	171	93
Data processing and telecommunications	495	464	962	914
Deposit operations	252	240	530	549
Other	493	540	925	995
Total non-interest expense	7,221	6,857	14,397	13,668
Income before income taxes	5,485	4,696	10,880	9,415
Provision for income taxes	1,216	1,568	2,997	3,140
Net income	$ 4,269	$ 3,128	$ 7,883	$ 6,275
Net income per common share
Basic (in dollars per share)	$ 0.58	$ 0.44	$ 1.08	$ 0.90
Diluted (in dollars per share)	$ 0.57	$ 0.42	$ 1.05	$ 0.86
Weighted average common shares outstanding
Basic (in shares)	7,328,127	7,135,083	7,320,243	6,997,420
Diluted (in shares)	7,512,058	7,379,353	7,510,092	7,306,644
Dividends paid per common share (in dollars per share)	$ 0.13	$ 0.11	$ 0.24	$ 0.2