GOODWILL (Details) $ in Thousands	9 Months Ended
Dec. 31, 2019 USD ($)
Changes in the carrying value of goodwill
Balance at the beginning of the period	$ 583,225
Effect of exchange rate changes and other	474
Balance at the end of the period	583,699
Integrated Systems [Member]
Changes in the carrying value of goodwill
Balance at the beginning of the period	517,104
Effect of exchange rate changes and other	474
Balance at the end of the period	517,578
Aerospace Structures [Member]
Changes in the carrying value of goodwill
Goodwill, Impaired, Accumulated Impairment Loss	1,246,454
Product Support [Member]
Changes in the carrying value of goodwill
Balance at the beginning of the period	66,121
Effect of exchange rate changes and other	0
Balance at the end of the period	$ 66,121

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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-Paragraph 1
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-Publisher FASB
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