Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Sep. 30, 2022
Current Assets:
Cash and cash equivalents	$ 152,039	$ 101,954
Short-term investments	11,085	14,554
Accounts receivable, less allowance for credit losses of $431 and $344	170,178	106,111
Contract assets	63,560	88,351
Inventories	58,690	50,415
Income taxes receivable	119	105
Prepaid expenses	2,710	4,679
Other current assets	4,819	3,814
Total Current Assets	463,200	369,983
Property, plant and equipment, net	97,910	98,628
Operating lease assets, net	1,665	2,179
Goodwill and intangible assets, net	1,003	1,003
Deferred income taxes	10,944	9,161
Other assets	12,374	12,426
Total Assets	587,096	493,380
Current Liabilities:
Accounts payable	51,209	63,423
Contract liabilities	178,217	79,857
Accrued compensation and benefits	17,789	24,785
Accrued product warranty	2,711	2,345
Current operating lease liabilities	989	1,777
Income taxes payable	2,584	1,720
Other current liabilities	16,192	12,466
Total Current Liabilities	269,691	186,373
Deferred compensation	9,114	7,749
Long-term operating lease liabilities	731	545
Other long-term liabilities	1,765	1,507
Total Liabilities	281,301	196,174
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; 12,666,701 and 12,588,011 shares issued, respectively	126	126
Additional paid-in capital	69,955	67,439
Retained earnings	286,777	283,638
Treasury stock, 806,018 shares at cost	(24,999)	(24,999)
Accumulated other comprehensive loss	(26,064)	(28,998)
Total Stockholders' Equity	305,795	297,206
Total Liabilities and Stockholders' Equity	$ 587,096	$ 493,380