Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2023	Sep. 30, 2022
Current Assets:
Cash and cash equivalents	$ 183,355	$ 101,954
Short-term investments	26,414	14,554
Accounts receivable, less allowance for credit losses of $293 and $344	204,522	106,111
Contract assets	56,148	88,351
Inventories	66,109	50,415
Income taxes receivable	147	105
Prepaid expenses	4,821	4,679
Other current assets	5,736	3,814
Total Current Assets	547,252	369,983
Property, plant and equipment, net	96,876	98,628
Operating lease assets, net	1,567	2,179
Goodwill	1,003	1,003
Deferred income taxes	11,712	9,161
Other assets	12,688	12,426
Total Assets	671,098	493,380
Current Liabilities:
Accounts payable	62,849	63,423
Contract liabilities	225,767	79,857
Accrued compensation and benefits	24,261	24,785
Accrued product warranty	3,202	2,345
Current operating lease liabilities	839	1,777
Income taxes payable	1,737	1,720
Other current liabilities	16,341	12,466
Total Current Liabilities	334,996	186,373
Deferred compensation	9,447	7,749
Long-term operating lease liabilities	741	545
Other long-term liabilities	1,844	1,507
Total Liabilities	347,028	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; 12,666,601 and 12,588,011 shares issued, respectively	126	126
Additional paid-in capital	70,913	67,439
Retained earnings	302,040	283,638
Treasury stock, 806,018 shares at cost	(24,999)	(24,999)
Accumulated other comprehensive loss	(24,010)	(28,998)
Total Stockholders' Equity	324,070	297,206
Total Liabilities and Stockholders' Equity	$ 671,098	$ 493,380