CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
CONSOLIDATED STATEMENTS OF OPERATIONS
Net revenues	$ 130,165	$ 88,143	$ 346,651	$ 242,383
Cost of sales	96,943	74,485	272,239	219,353
Gross profit	33,222	13,658	74,412	23,030
Selling, general and administrative expense	11,847	11,475	34,991	32,465
Research and technical expense	957	831	2,806	2,482
Operating income (loss)	20,418	1,352	36,615	(11,917)
Nonoperating retirement benefit expense (income)	(1,088)	359	(3,264)	1,077
Interest income	(1)	(4)	(15)	(9)
Interest expense	750	298	1,564	900
Income (loss) before income taxes	20,757	699	38,330	(13,885)
Provision for (benefit from) income taxes	5,149	277	9,579	(2,648)
Net income (loss)	$ 15,608	$ 422	$ 28,751	$ (11,237)
Net income (loss) per share:
Basic (dollars per share)	$ 1.25	$ 0.03	$ 2.30	$ (0.91)
Diluted (dollars per share)	$ 1.24	$ 0.03	$ 2.28	$ (0.91)
Weighted Average Common Shares Outstanding
Basic (in shares)	12,339,308	12,515,161	12,346,372	12,507,373
Diluted (in shares)	12,459,255	12,676,294	12,506,938	12,507,373
Dividends declared per common share (dollars per share)	$ 0.22	$ 0.22	$ 0.66	$ 0.66