SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Changes in Accounting Estimates (Details 5) - USD ($)	3 Months Ended			9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2019	Dec. 31, 2018
Revenue Benchmark [Member]
Change in Accounting Estimate [Line Items]
Change in Accounting Estimate	$ 4,722,000	$ 674,000		$ 2,347,000	$ (5,632,000)
Operating Income (Loss) [Member]
Change in Accounting Estimate [Line Items]
Change in Accounting Estimate	(210,000)	(47,028,000)		(16,393,000)	(59,407,000)
Income, net [Member]
Change in Accounting Estimate [Line Items]
Change in Accounting Estimate	(166,000)	(47,028,000)		(12,950,000)	(59,407,000)
Diluted earings per share [Member]
Change in Accounting Estimate [Line Items]
Change in Accounting Estimate	$ 0.00	$ (0.95)		$ (0.26)	$ (1.20)
Aerospace Structures [Member]
Change in Accounting Estimate [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Operating Results			$ 87,241,000