Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Treasury Stock, Common	Additional Paid-in Capital [Member]	Retained Earnings [Member]
Stockholders' Equity Attributable to Parent at Sep. 30, 2022	$ 361,288	$ 220	$ (44,000)	$ 201,871	$ 203,197
Shares, Issued at Sep. 30, 2022		22,049,529	1,707,629
Issuances under compensation plans	0		$ (1,843)	(1,843)
Issuances under compensation plans, shares			71,013
Acquisition of treasury stock	7,637		$ 7,647	(10)
Acquisition of treasury stock, shares			(243,392)
Options exercised	14		$ 53	39
Options exercised, shares			2,000
Non-cash compensation	(1,959)			(1,959)
Noncontrolling Interest, Change in Redemption Value	(5,826)				(5,826)
Stockholders' Equity Attributable to Parent at Mar. 31, 2023	397,751	$ 220	$ (49,751)	201,958	245,324
Shares, Issued at Mar. 31, 2023		22,049,529	1,878,008
Net Income (Loss) Available to Common Stockholders, Basic	47,953				47,953
Stockholders' Equity Attributable to Parent at Dec. 31, 2022	378,051	$ 220	$ (49,653)	200,940	226,544
Shares, Issued at Dec. 31, 2022		22,049,529	1,875,676
Acquisition of treasury stock	148		$ 151	(3)
Acquisition of treasury stock, shares			(4,332)
Options exercised	14		$ 53	39
Options exercised, shares			2,000
Non-cash compensation	(1,054)			(1,054)
Noncontrolling Interest, Change in Redemption Value	(2,771)				(2,771)
Stockholders' Equity Attributable to Parent at Mar. 31, 2023	397,751	$ 220	$ (49,751)	201,958	245,324
Shares, Issued at Mar. 31, 2023		22,049,529	1,878,008
Net Income (Loss) Available to Common Stockholders, Basic	21,551				21,551
Stockholders' Equity Attributable to Parent at Sep. 30, 2023	449,985	$ 220	$ (49,450)	203,431	295,784
Shares, Issued at Sep. 30, 2023		22,049,529	1,855,311
Issuances under compensation plans	0		$ (2,213)	(2,213)
Issuances under compensation plans, shares			82,180
Acquisition of treasury stock	3,218		$ 3,218	0
Acquisition of treasury stock, shares			(33,940)
Options exercised	8		$ 27	19
Options exercised, shares			1,000
Non-cash compensation	(2,889)			(2,889)
Noncontrolling Interest, Change in Redemption Value	(8,723)				(8,723)
Stockholders' Equity Attributable to Parent at Mar. 31, 2024	534,806	$ 220	$ (50,428)	204,088	380,926
Shares, Issued at Mar. 31, 2024		22,049,529	1,806,071
Net Income (Loss) Available to Common Stockholders, Basic	93,865				93,865
Stockholders' Equity Attributable to Parent at Dec. 31, 2023	488,643	$ 220	$ (49,521)	203,986	333,958
Shares, Issued at Dec. 31, 2023		22,049,529	1,835,553
Issuances under compensation plans	0		$ (1,355)	(1,355)
Issuances under compensation plans, shares			50,000
Acquisition of treasury stock	2,289		$ 2,289	0
Acquisition of treasury stock, shares			(21,518)
Options exercised	8		$ 27	19
Options exercised, shares			1,000
Non-cash compensation	(1,476)			(1,476)
Noncontrolling Interest, Change in Redemption Value	(5,941)				(5,941)
Stockholders' Equity Attributable to Parent at Mar. 31, 2024	534,806	$ 220	$ (50,428)	$ 204,088	380,926
Shares, Issued at Mar. 31, 2024		22,049,529	1,806,071
Net Income (Loss) Available to Common Stockholders, Basic	$ 52,909				$ 52,909