CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2021	Sep. 30, 2020
Current assets:
Cash and cash equivalents	$ 69,820	$ 47,238
Accounts receivable, less allowance for doubtful accounts of $545 and $528 at September 30, 2020 and March 31, 2021, respectively	46,097	51,118
Inventories	226,865	246,124
Income taxes receivable	3,065	3,770
Other current assets	4,617	3,285
Total current assets	350,464	351,535
Property, plant and equipment, net	152,696	159,819
Deferred income taxes	33,591	30,551
Other assets	8,068	8,974
Goodwill	4,789	4,789
Other intangible assets, net	5,812	5,056
Total assets	555,420	560,724
Current liabilities:
Accounts payable	23,689	17,555
Accrued expenses	16,692	14,757
Income taxes payable	166
Accrued pension and postretirement benefits	3,403	3,403
Deferred revenue-current portion	2,500	2,500
Total current liabilities	46,450	38,215
Long-term obligations (less current portion)	8,347	8,509
Deferred revenue (less current portion)	11,579	12,829
Deferred income taxes	2,164	2,131
Operating lease liabilities	1,519	1,719
Accrued pension benefits (less current portion)	101,145	105,788
Accrued postretirement benefits (less current portion)	90,325	90,032
Total liabilities	261,529	259,223
Commitments and contingencies
Stockholders' equity:
Common stock, $0.001 par value (40,000,000 shares authorized, 12,681,280 and 12,758,078 shares issued and 12,622,371 and 12,688,730 shares outstanding at September 30, 2020 and March 31, 2021, respectively)	13	13
Preferred stock, $0.001 par value (20,000,000 shares authorized, 0 shares issued and outstanding)
Additional paid-in capital	259,796	257,583
Accumulated earnings	103,721	120,943
Treasury stock, 58,909 shares at September 30, 2020 and 69,348 shares at March 31, 2021	(2,675)	(2,437)
Accumulated other comprehensive loss	(66,964)	(74,601)
Total stockholders' equity	293,891	301,501
Total liabilities and stockholders' equity	$ 555,420	$ 560,724