CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2023	Sep. 30, 2022
Current assets:
Cash and cash equivalents	$ 56,052	$ 97,724
Accounts receivable, net of allowance for credit losses of $3,112 and $2,612, respectively	192,146	164,645
Contract assets	128,284	125,154
Inventories	192,493	162,403
Other current assets	24,847	22,696
Total current assets	593,822	572,622
Property, plant and equipment, net of accumulated depreciation of $171,569 and $165,322, respectively	155,337	155,973
Intangible assets, net of accumulated amortization of $196,951 and $175,928, respectively	398,418	394,464
Goodwill	505,590	492,709
Operating lease assets	40,314	29,150
Other assets	10,028	9,538
Total assets	1,703,509	1,654,456
Current liabilities:
Current maturities of long-term debt	20,000	20,000
Accounts payable	76,761	78,746
Contract liabilities	122,526	125,009
Accrued salaries	38,428	40,572
Accrued other expenses	51,236	53,802
Total current liabilities	308,951	318,129
Deferred tax liabilities	78,585	82,023
Non-current operating lease liabilities	36,815	24,853
Other liabilities	44,115	48,294
Long-term debt	128,000	133,000
Total liabilities	596,466	606,299
Shareholders' equity:
Preferred stock, par value $.01 per share, authorized 10,000,000 shares
Common stock, par value $.01 per share, authorized 50,000,000 shares, issued 30,751,449 and 30,707,748 shares, respectively	308	307
Additional paid-in capital	305,555	301,553
Retained earnings	959,381	905,022
Accumulated other comprehensive loss, net of tax	(18,839)	(31,764)
Total stockholders' equity before treasury stock	1,246,405	1,175,118
Less treasury stock, at cost: 4,995,414 and 4,854,997 common shares, respectively	(139,362)	(126,961)
Total shareholders' equity	1,107,043	1,048,157
Total liabilities and shareholders' equity	$ 1,703,509	$ 1,654,456