ADJUSTED QUARTERLY FINANCIAL INFORMATION (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Sep. 30, 2021
Revenue from contract with customer excluding assessed tax	$ 177,010	$ 162,674
Cost of sales	108,305	99,622
Earnings before income taxes	14,837	16,540
Income tax expense	3,313	3,722
Net earnings	$ 11,524	$ 12,818
Diluted earnings (loss) per share:
Diluted - Net earnings	$ 0.44	$ 0.49
Contract assets, net	$ 100,863		$ 93,771
Inventories	165,021		147,148
Total current assets	484,802		466,154
Total assets	1,604,216		1,577,345
Retained earnings	840,434		830,989
Total shareholders' equity	1,015,277	$ 976,162	1,019,696
Total liabilities and shareholders' equity	$ 1,604,216		$ 1,577,345
As Reported
Revenue from contract with customer excluding assessed tax		162,949
Cost of sales		98,777
Earnings before income taxes		17,660
Income tax expense		3,974
Net earnings		$ 13,686
Diluted earnings (loss) per share:
Diluted - Net earnings		$ 0.52
AS Adjusted
Revenue from contract with customer excluding assessed tax		$ 162,674
Cost of sales		99,622
Earnings before income taxes		16,540
Income tax expense		3,722
Net earnings		$ 12,818
Diluted earnings (loss) per share:
Diluted - Net earnings		$ 0.49