Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2022	Sep. 30, 2021
Current Assets:
Cash and cash equivalents	$ 75,830	$ 114,314
Short-term investments	22,682	19,667
Accounts receivable, less allowance for credit losses of $517 and $333	103,022	78,304
Contract assets	68,245	54,199
Inventories	48,739	29,835
Income taxes receivable	291	161
Prepaid expenses	3,165	4,382
Other current assets	2,798	1,599
Total Current Assets	324,772	302,461
Property, plant and equipment, net	102,023	109,457
Operating lease assets, net	1,909	3,453
Goodwill and intangible assets, net	1,003	1,003
Deferred income taxes	10,187	4,639
Other assets	11,910	15,179
Total Assets	451,804	436,192
Current Liabilities:
Current maturities of long-term debt	0	400
Accounts payable	46,235	45,247
Contract liabilities	66,582	42,433
Accrued compensation and benefits	15,427	20,395
Accrued product warranty	2,288	2,531
Current operating lease liabilities	953	1,415
Income taxes payable	356	1,076
Other current liabilities	12,509	7,659
Total Current Liabilities	144,350	121,156
Deferred compensation	8,100	8,613
Long-term operating lease liabilities	1,159	2,413
Other long-term liabilities	2,247	2,787
Total Liabilities	155,856	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; 12,586,811 and 12,497,691 shares issued, respectively	126	125
Additional paid-in capital	65,661	63,948
Retained earnings	278,017	282,505
Treasury stock, 806,018 shares at cost	(24,999)	(24,999)
Accumulated other comprehensive loss	(22,857)	(20,356)
Total Stockholders' Equity	295,948	301,223
Total Liabilities and Stockholders' Equity	$ 451,804	$ 436,192