BUSINESS SEGMENT INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
BUSINESS SEGMENT INFORMATION
NET SALES	$ 180,492	$ 171,243	$ 352,220	$ 334,608
Consolidated EBIT	21,345	21,976	38,136	47,326
Less: Interest expense	(1,320)	(1,853)	(3,741)	(3,708)
Earnings before income taxes	20,025	20,123	34,395	43,618
Aerospace & Defense
BUSINESS SEGMENT INFORMATION
NET SALES	95,124	79,478	172,635	145,702
Consolidated EBIT	21,736	17,443	34,249	28,053
Test
BUSINESS SEGMENT INFORMATION
NET SALES	41,600	42,875	82,983	84,161
Consolidated EBIT	5,651	5,554	10,307	8,864
USG
BUSINESS SEGMENT INFORMATION
NET SALES	43,768	48,890	96,602	104,745
Consolidated EBIT	4,866	8,767	14,153	30,313
Corporate (loss)
BUSINESS SEGMENT INFORMATION
Consolidated EBIT	$ (10,908)	$ (9,788)	$ (20,573)	$ (19,904)

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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Amount of income (loss) from continuing operations, nonoperating income (expense) and income (loss) from equity method investments, before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of interest income (expense).

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The net amount of operating interest income (expense).

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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