Consolidated Condensed Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Sep. 30, 2019		5,777
Beginning balance at Sep. 30, 2019	$ 36,054	$ 5,777	$ 10,438	$ 33,148	$ (13,309)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	4,969			4,168	801
Other	46		46
Performance and restricted share expense	262		262
Share transactions under equity based plans (in shares)		139
Share transactions under equity based plans	(8)	$ 139	(147)
Ending balance (in shares) at Jun. 30, 2020		5,916
Ending balance at Jun. 30, 2020	41,323	$ 5,916	10,599	37,316	(12,508)
Beginning balance (in shares) at Mar. 31, 2020		5,916
Beginning balance at Mar. 31, 2020	38,689	$ 5,916	10,516	35,066	(12,809)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	2,551			2,250	301
Performance and restricted share expense	46		46
Share transactions under equity based plans (in shares)		0
Share transactions under equity based plans	37	$ 0	37
Ending balance (in shares) at Jun. 30, 2020		5,916
Ending balance at Jun. 30, 2020	41,323	$ 5,916	10,599	37,316	(12,508)
Beginning balance (in shares) at Sep. 30, 2020		5,916
Beginning balance at Sep. 30, 2020	45,523	$ 5,916	10,736	42,339	(13,468)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	2,452			1,756	696
Performance and restricted share expense	378		378
Share transactions under equity based plans (in shares)		73
Share transactions under equity based plans	(16)	$ 73	(89)
Ending balance (in shares) at Jun. 30, 2021		5,989
Ending balance at Jun. 30, 2021	48,337	$ 5,989	11,025	44,095	(12,772)
Beginning balance (in shares) at Mar. 31, 2021		5,989
Beginning balance at Mar. 31, 2021	47,708	$ 5,989	10,940	43,841	(13,062)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	544			254	290
Performance and restricted share expense	85		85
Ending balance (in shares) at Jun. 30, 2021		5,989
Ending balance at Jun. 30, 2021	$ 48,337	$ 5,989	$ 11,025	$ 44,095	$ (12,772)