CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
Current assets:
Cash and cash equivalents	$ 55,715	$ 56,232
Accounts receivable, net of allowance for doubtful accounts of $3,588 and $3,445, respectively	135,874	146,341
Contract assets, net	100,863	93,771
Inventories, net	165,021	147,148
Other current assets	27,329	22,662
Total current assets	484,802	466,154
Property, plant and equipment:
Property, plant and equipment, net of accumulated depreciation of $150,818 and $147,551, respectively	155,712	154,265
Intangible assets, net of accumulated amortization of $156,359 and $149,892, respectively	411,679	409,250
Goodwill	509,268	504,853
Operating lease assets	31,117	31,846
Other assets	11,638	10,977
Total assets	1,604,216	1,577,345
Current liabilities:
Current maturities of long-term debt and short-term borrowings	20,000	20,000
Accounts payable	63,651	56,669
Contract liabilities, net	111,596	108,814
Accrued salaries	29,691	39,768
Accrued other expenses	40,936	52,513
Total current liabilities	265,874	277,764
Deferred tax liabilities	80,962	73,560
Non-current operating lease liabilities	26,709	28,032
Other liabilities	37,394	44,293
Long-term debt	178,000	134,000
Total liabilities	588,939	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 30,705,913 and 30,666,173 shares, respectively	307	307
Additional paid-in capital	296,277	297,644
Retained earnings	840,434	830,989
Accumulated other comprehensive loss, net of tax	(4,661)	(2,161)
Total stockholders' equity before treasury stock	1,132,357	1,126,779
Less treasury stock, at cost: 4,720,417 and 4,604,741 common shares, respectively	(117,080)	(107,083)
Total shareholders' equity	1,015,277	1,019,696
Total liabilities and shareholders' equity	$ 1,604,216	$ 1,577,345