CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2022	Sep. 30, 2021
Current assets:
Cash and cash equivalents	$ 61,019	$ 56,232
Accounts receivable, net of allowance for doubtful accounts of $3,328 and $3,445, respectively	168,720	146,341
Contract assets	115,840	93,771
Inventories, net	178,168	147,148
Other current assets	29,718	22,662
Total current assets	553,465	466,154
Property, plant and equipment, net of accumulated depreciation of $161,177 and $147,551, respectively	155,961	154,265
Intangible assets, net of accumulated amortization of $169,274 and $149,892, respectively	401,337	409,250
Goodwill	503,439	504,853
Operating lease assets	28,922	31,846
Other assets	9,562	10,977
Total assets	1,652,686	1,577,345
Current liabilities:
Current maturities of long-term debt and short-term borrowings	20,000	20,000
Accounts payable	70,748	56,669
Contract liabilities	117,863	106,045
Accrued salaries	35,256	39,768
Accrued other expenses	48,228	52,513
Total current liabilities	292,095	274,995
Deferred tax liabilities	82,580	73,560
Non-current operating lease liabilities	25,209	28,032
Other liabilities	41,920	47,062
Long-term debt	181,000	134,000
Total liabilities	622,804	557,649
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 30,707,567 and 30,666,173 shares, respectively	307	307
Additional paid-in capital	299,863	297,644
Retained earnings	876,050	830,989
Accumulated other comprehensive loss, net of tax	(19,377)	(2,161)
Total stockholders' equity before treasury stock	1,156,843	1,126,779
Less treasury stock, at cost: 4,854,997 and 4,604,741 common shares, respectively	(126,961)	(107,083)
Total shareholders' equity	1,029,882	1,019,696
Total liabilities and shareholders' equity	$ 1,652,686	$ 1,577,345