CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2017	Sep. 30, 2016
Current assets:
Cash and cash equivalents	$ 46,328	$ 59,297
Restricted cash (Note 21)		5,446
Accounts receivable, less allowance for doubtful accounts of $402 and $620 at September 30, 2016 and September 30, 2017, respectively	61,602	61,612
Inventories	244,457	236,558
Income taxes receivable		538
Other current assets	2,781	2,809
Total current assets	355,168	366,260
Property, plant and equipment, net	192,556	199,182
Deferred income taxes	58,133	71,010
Other assets	5,107	1,798
Goodwill	4,789	4,789
Other intangible assets, net	6,066	6,562
Total assets	621,819	649,601
Current liabilities:
Accounts payable	32,802	29,925
Accrued expenses	14,108	12,880
Income taxes payable	195
Accrued pension and postretirement benefits	5,095	5,095
Deferred revenue—current portion	2,500	7,488
Total current liabilities	54,700	55,388
Long-term obligations (less current portion) (Note 18)	7,896	8,256
Deferred revenue (less current portion)	20,329	22,829
Deferred income taxes	1,741	1,578
Accrued pension benefits (less current portion)	90,957	130,134
Accrued postretirement benefits (less current portion)	112,424	120,117
Total liabilities	288,047	338,302
Commitments and contingencies (Notes 9 and 10)
Stockholders' equity:
Common stock, $0.001 par value (40,000,000 shares authorized, 12,520,308 and 12,544,933 shares issued and 12,491,149 and 12,509,757 outstanding at September 30, 2016 and September 30, 2017, respectively)	13	12
Preferred stock, $0.001 par value (20,000,000 shares authorized, 0 shares issued and outstanding)
Additional paid-in capital	248,733	246,625
Accumulated earnings	159,366	180,565
Treasury stock, 29,159 shares at September 30, 2016 and 35,176 shares at September 30, 2017	(1,646)	(1,380)
Accumulated other comprehensive loss	(72,694)	(114,523)
Total stockholders' equity	333,772	311,299
Total liabilities and stockholders' equity	$ 621,819	$ 649,601