BUSINESS SEGMENT INFORMATION (Details) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($) segment	Jun. 30, 2024 USD ($)
BUSINESS SEGMENT INFORMATION
Number of reportable segments \| segment			3
Net sales	$ 296,344	$ 233,568	$ 742,714	$ 645,621
Consolidated EBIT	40,990	39,301	105,659	89,598
Less: Interest expense	(7,921)	(3,335)	(12,373)	(9,228)
Earnings before income taxes	33,069	35,966	93,286	80,370
Aerospace & Defense
BUSINESS SEGMENT INFORMATION
Net sales	136,324	87,235	307,819	241,279
Consolidated EBIT	36,577	20,150	78,246	55,919
USG
BUSINESS SEGMENT INFORMATION
Net sales	92,357	90,277	269,784	260,570
Consolidated EBIT	21,540	22,155	62,808	57,355
Test
BUSINESS SEGMENT INFORMATION
Net sales	67,663	56,056	165,111	143,772
Consolidated EBIT	10,732	9,292	21,523	16,613
Corporate (loss)
BUSINESS SEGMENT INFORMATION
Consolidated EBIT	$ (27,859)	$ (12,296)	$ (56,918)	$ (40,289)

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