Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2022	Sep. 30, 2021
Current Assets:
Cash and cash equivalents	$ 86,431	$ 114,314
Short-term investments	27,143	19,667
Accounts receivable, less allowance for credit losses of $703 and $333	90,741	78,304
Contract assets	58,553	54,199
Inventories	43,685	29,835
Income taxes receivable	154	161
Prepaid expenses	2,413	4,382
Other current assets	2,559	1,599
Total Current Assets	311,679	302,461
Property, plant and equipment, net	105,968	109,457
Operating lease assets, net	3,205	3,453
Goodwill and intangible assets, net	1,003	1,003
Deferred income taxes	4,690	4,639
Other assets	13,160	15,179
Total Assets	439,705	436,192
Current Liabilities:
Current maturities of long-term debt	0	400
Accounts payable	48,697	45,247
Contract liabilities	56,706	42,433
Accrued compensation and benefits	12,608	20,395
Accrued product warranty	2,347	2,531
Current operating lease liabilities	1,629	1,415
Income taxes payable	1,102	1,076
Other current liabilities	9,794	7,659
Total Current Liabilities	132,883	121,156
Deferred compensation	9,085	8,613
Long-term operating lease liabilities	1,836	2,413
Other long-term liabilities	3,031	2,787
Total Liabilities	146,835	134,969
Commitments and Contingencies (Note F)
Stockholders' Equity:
Preferred stock, par value $0.01; 5,000,000 shares authorized; none issued	0	0
Common stock, par value $0.01; 30,000,000 shares authorized; 12,586,661 and 12,497,691 shares issued, respectively	126	125
Additional paid-in capital	65,075	63,948
Retained earnings	272,068	282,505
Treasury stock, 806,018 shares at cost	(24,999)	(24,999)
Accumulated other comprehensive loss	(19,400)	(20,356)
Total Stockholders' Equity	292,870	301,223
Total Liabilities and Stockholders' Equity	$ 439,705	$ 436,192