CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
CONSOLIDATED STATEMENTS OF OPERATIONS
Net revenues	$ 126,032	$ 113,114	$ 360,575	$ 313,013
Cost of sales	107,857	97,751	316,382	275,062
Gross profit	18,175	15,363	44,193	37,951
Selling, general and administrative expense	10,985	13,661	32,776	36,670
Research and technical expense	830	1,018	2,523	2,871
Operating income (loss)	6,360	684	8,894	(1,590)
Nonoperating retirement benefit expense	856	2,118	2,568	6,289
Interest income	(15)	(18)	(53)	(53)
Interest expense	231	228	756	687
Income (loss) before income taxes	5,288	(1,644)	5,623	(8,513)
Provision for (benefit from) income taxes	1,486	(2,357)	1,915	15,368
Net income (loss)	$ 3,802	$ 713	$ 3,708	$ (23,881)
Net income (loss) per share:
Basic (in dollars per share)	$ 0.30	$ 0.06	$ 0.29	$ (1.93)
Diluted (in dollars per share)	$ 0.30	$ 0.06	$ 0.29	$ (1.93)
Weighted Average Common Shares Outstanding
Weighted average common shares outstanding - Basic	12,449,738	12,422,485	12,443,039	12,418,579
Weighted average common shares outstanding - Diluted	12,591,596	12,429,629	12,591,222	12,418,579
Dividends declared per common share (in dollars per share)	$ 0.22	$ 0.22	$ 0.66	$ 0.66