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)	2,419			1,919	500
Performance and restricted share expense	225		225
Share transactions under equity based plans (in shares)		139
Share transactions under equity based plans	(8)	$ 139	(147)
Ending balance (in shares) at Mar. 31, 2020		5,916
Ending balance at Mar. 31, 2020	38,690	$ 5,916	10,516	35,067	(12,809)
Beginning balance (in shares) at Dec. 31, 2019		5,863
Beginning balance at Dec. 31, 2019	35,245	$ 5,863	10,503	31,807	(12,928)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	3,379			3,260	119
Performance and restricted share expense	70		70
Share transactions under equity based plans (in shares)		53
Share transactions under equity based plans	(4)	$ 53	(57)
Ending balance (in shares) at Mar. 31, 2020		5,916
Ending balance at Mar. 31, 2020	38,690	$ 5,916	10,516	35,067	(12,809)
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)	1,908			1,502	406
Performance and restricted share expense	293		293
Share transactions under equity based plans (in shares)		73
Share transactions under equity based plans	(16)	$ 73	(89)
Ending balance (in shares) at Mar. 31, 2021		5,989
Ending balance at Mar. 31, 2021	47,708	$ 5,989	10,940	43,841	(13,062)
Beginning balance (in shares) at Dec. 31, 2020		5,959
Beginning balance at Dec. 31, 2020	49,141	$ 5,959	10,820	45,332	(12,970)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	(1,583)			(1,491)	(92)
Performance and restricted share expense	150		150
Share transactions under equity based plans (in shares)		30
Share transactions under equity based plans	0	$ 30	(30)
Ending balance (in shares) at Mar. 31, 2021		5,989
Ending balance at Mar. 31, 2021	$ 47,708	$ 5,989	$ 10,940	$ 43,841	$ (13,062)