CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2022	Sep. 30, 2021
Current assets:
Cash and cash equivalents	$ 54,324	$ 56,232
Accounts receivable, net of allowance for doubtful accounts of $3,403 and $3,445, respectively	140,497	146,341
Contract assets	111,453	93,771
Inventories, net	175,152	147,148
Other current assets	31,972	22,662
Total current assets	513,398	466,154
Property, plant and equipment, net of accumulated depreciation of $156,237 and $147,551, respectively	156,963	154,265
Intangible assets, net of accumulated amortization of $162,869 and $149,892, respectively	407,203	409,250
Goodwill	508,406	504,853
Operating lease assets	30,139	31,846
Other assets	9,677	10,977
Total assets	1,625,786	1,577,345
Current liabilities:
Current maturities of long-term debt and short-term borrowings	20,000	20,000
Accounts payable	71,811	56,669
Contract liabilities	108,629	106,045
Accrued salaries	30,150	39,768
Accrued other expenses	47,205	52,513
Total current liabilities	277,795	274,995
Deferred tax liabilities	82,187	73,560
Non-current operating lease liabilities	26,302	28,032
Other liabilities	42,329	47,062
Long-term debt	176,000	134,000
Total liabilities	604,613	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	298,353	297,644
Retained earnings	854,946	830,989
Accumulated other comprehensive loss, net of tax	(7,472)	(2,161)
Total stockholders' equity before treasury stock	1,146,134	1,126,779
Less treasury stock, at cost: 4,826,545 and 4,604,741 common shares, respectively	(124,961)	(107,083)
Total shareholders' equity	1,021,173	1,019,696
Total liabilities and shareholders' equity	$ 1,625,786	$ 1,577,345