Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2024	Sep. 30, 2023
Current assets
Cash and cash equivalents	$ 336,543	$ 678,910
Short-term marketable securities	259,296	338,873
Accounts receivable, net of allowance for expected credit losses ($6,507 and $8,057, respectively)	167,613	156,535
Inventories	115,270	128,198
Derivative asset	834	13,036
Prepaid expenses and other current assets	88,102	103,404
Total current assets	967,658	1,418,956
Property, plant and equipment, net	196,124	205,744
Long-term marketable securities	148,086	111,338
Long-term deferred tax assets	1,231	571
Goodwill	679,691	784,339
Intangibles assets, net	253,475	294,301
Other assets	77,030	70,471
Total assets	2,323,295	2,885,720
Current liabilities
Accounts payable	39,115	35,796
Deferred revenue	33,268	34,614
Accrued warranty and retrofit costs	9,351	10,223
Accrued compensation and benefits	31,229	33,911
Accrued customer deposits	20,954	17,707
Accrued income taxes payable	11,705	7,378
Short-term operating lease liability	10,739	9,499
Accrued expenses and other current liabilities	46,213	61,800
Total current liabilities	202,574	210,928
Long-term deferred tax liabilities	58,080	67,301
Long-term operating lease liabilities	60,654	60,436
Other long-term liabilities	11,589	12,555
Total liabilities	332,897	351,220
Stockholders' equity
Preferred stock, $0.01 par value - 1,000,000 shares authorized, no shares issued or outstanding	0	0
Common stock, $0.01 par value - 125,000,000 shares authorized, 63,941,421 shares issued and 50,395,071 shares outstanding at June 30, 2024, 71,294,247 shares issued and 57,832,378 shares outstanding at September 30, 2023	639	713
Additional paid-in capital	758,269	1,156,160
Accumulated other comprehensive loss	(44,895)	(62,426)
Treasury stock, at cost - 13,546,350 shares at June 30, 2024 and 13,461,869 shares at September 30, 2023	(205,438)	(200,956)
Retained earnings	1,481,823	1,641,009
Total stockholders' equity	1,990,398	2,534,500
Total liabilities and stockholders' equity	$ 2,323,295	$ 2,885,720