CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock Cumulative Effect Period Of Adoption Adjustment Member	Common Stock	Additional Paid-in Capital Cumulative Effect Period Of Adoption Adjustment Member	Additional Paid-in Capital	Retained Earnings Cumulative Effect Period Of Adoption Adjustment Member	Retained Earnings	Accumulated Other Comprehensive Income Cumulative Effect Period Of Adoption Adjustment Member	Accumulated Other Comprehensive Income	Unearned Stock Compensation Cumulative Effect Period Of Adoption Adjustment Member	Unearned Stock Compensation	Treasury Stock Cumulative Effect Period Of Adoption Adjustment Member	Treasury Stock	Noncontrolling Interests in Subsidiary Cumulative Effect Period Of Adoption Adjustment Member	Noncontrolling Interests in Subsidiary	Cumulative Effect Period Of Adoption Adjustment Member	Total
Balances at Sep. 30, 2018		$ 26		$ 27,630		$ 76,523		$ 382		$ (479)		$ (5,269)		$ 1,432		$ 100,245
Net Income		0		0		16,177		0		0		0		818		16,995
Other comprehensive income (loss)		0		0		0		6,914		0		0		0		6,914
Common stock dividends		0		0		(1,472)		0		0		0		0		(1,472)
Distributions to noncontrolling interests		0		0		0		0		0		0		(2,046)		(2,046)
Restricted stock grants, net of forfeitures		0		141		0		0		(141)		0		0
Stock compensation expense		0		72		0		0		174		0		0		246
Stock option exercises		0		(349)		0		0		0		1,297		0		948
Purchase of treasury shares		0		0		0		0		0		(573)		0		(573)
Balances at Sep. 30, 2019		26		27,494		91,228		7,296		(446)		(4,545)		204		121,257
Net Income		0		0		33,354		0		0		0		727		34,081
Other comprehensive income (loss)		0		0		0		3,913		0		0		0		3,913
Common stock dividends		0		0		(1,590)		0		0		0		0		(1,590)
Distributions to noncontrolling interests		0		0		0		0		0		0		(638)		(638)
Restricted stock grants		0		95		0		0		(95)		0		0
Stock compensation expense		0		86		0		0		193		0		0		279
Stock option exercises		0		(195)		0		0		0		594		0		399
Purchase of treasury shares		0		0		0		0		0		(302)		0		(302)
Balances at Sep. 30, 2020		26		27,480		123,158		11,209		(348)		(4,253)		293		157,565
Cumulative effect adjustment, adoption of ASU 2016-02	$ 0		$ 0		$ 166		$ 0		$ 0		$ 0		$ 0		$ 166	123,158
Net Income		0		0		29,567		0		0		0		402		29,969
Acquisition of minority interests in Q2		0		(1,874)		0		0		0		0		(695)		(2,569)
Other comprehensive income (loss)		0		0		0		(2,309)		0		0		0		(2,309)
Common stock dividends		0		0		(2,540)		0		0		0		0		(2,540)
Restricted stock forfeitures		0		(25)		0		0		25		0		0
Stock compensation expense		0		92		0		0		185		0		0		277
Stock option exercises		0		100		0		0		0		2		0		102
Purchase of treasury shares		0		0		0		0		0		(118)		0		(118)
Three-for-one stock split in the form of a stock dividend		52		(52)		0		0		0		0		0
Balances at Sep. 30, 2021		$ 78		$ 25,721		$ 150,185		$ 8,900		$ (138)		$ (4,369)		$ 0		180,377
Cumulative effect adjustment, adoption of ASU 2016-02															$ 4,600	$ 150,185