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FAIR VALUE DISCLOSURES (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
FAIR VALUE DISCLOSURES (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Fair Value [Line Items]
Goodwill		$ 19,798	$ 29,990	$ 75,628
Inventories		124,911	142,503
Assets held for sale		38,246	43,783
Intangible Assets		5,736
Impairment of inventories		(7,572)	(5,439)	(7,200)
Impairment charges on assets held for sale		(12,450)	(29,571)	(36,057)
Goodwill, impairment loss	$ (22,300)	(8,706)	(41,579)
Intangible Assets, Gross (Excluding Goodwill)		27,212	27,858	$ 28,306
Impairments, intangible assets			(8,086)
Total loss on sale of assets and asset impairment charges		(28,728)	(84,675)
Rabbi Trust investments		3,100
Other accrued liabilities		46,679	48,392
Other liabilities and deferred credits		28,899	33,273
Carrying value of total debt		1,293,364	1,140,889
Fair value of total debt		1,215,065	1,016,413
Senior Notes \| Senior Notes Due 2022
Fair Value [Line Items]
Carrying value of total debt		401,535	401,535
Fair value of total debt		323,236	277,059
Term Loan
Fair Value [Line Items]
Carrying value of total debt		261,907	335,665
Fair value of total debt		261,907	335,665
Revolving Credit Facility
Fair Value [Line Items]
Carrying value of total debt		139,100	144,000
Fair value of total debt		139,100	144,000
Secured Debt \| Lombard Debt
Fair Value [Line Items]
Carrying value of total debt		196,832	0
Fair value of total debt		196,832	0
Secured Debt \| Macquarie Debt
Fair Value [Line Items]
Carrying value of total debt		200,000	0
Fair value of total debt		200,000	0
Other Debt \| Airnorth Debt
Fair Value [Line Items]
Carrying value of total debt		16,471	19,652
Fair value of total debt		16,471	19,652
Other Debt \| Eastern Airways Debt
Fair Value [Line Items]
Carrying value of total debt		15,326	15,643
Fair value of total debt		15,326	15,643
Other Debt \| Other Debt
Fair Value [Line Items]
Carrying value of total debt		16,293	24,394
Fair value of total debt		16,293	24,394
Term Loan Credit Facility
Fair Value [Line Items]
Carrying value of total debt		45,900	200,000
Fair value of total debt		45,900	200,000
Fair value measurements nonrecurring
Fair Value [Line Items]
Goodwill		19,798	29,990
Inventories		46,568	6,261
Assets held for sale		38,246	43,783
Total assets		104,612	80,034
Intangible Assets, Gross (Excluding Goodwill)			0
Fair value, measurements, recurring
Fair Value [Line Items]
Rabbi Trust investments		3,075	2,990
Total assets		3,075	2,990
Other accrued liabilities			29,522
Other liabilities and deferred credits			3,069
Total liabilities			32,591
Fair value, inputs, Level 1 \| Fair value measurements nonrecurring
Fair Value [Line Items]
Goodwill		0	0
Inventories		0	0
Assets held for sale		0	0
Total assets		0	0
Intangible Assets, Gross (Excluding Goodwill)			0
Fair value, inputs, Level 1 \| Fair value, measurements, recurring
Fair Value [Line Items]
Rabbi Trust investments		3,075	2,990
Total assets		3,075	2,990
Other accrued liabilities			0
Other liabilities and deferred credits			0
Total liabilities			0
Fair value, inputs, Level 2 \| Fair value measurements nonrecurring
Fair Value [Line Items]
Goodwill		0	0
Inventories		46,568	6,261
Assets held for sale		38,246	43,783
Total assets		84,814	50,044
Intangible Assets, Gross (Excluding Goodwill)			0
Fair value, inputs, Level 2 \| Fair value, measurements, recurring
Fair Value [Line Items]
Rabbi Trust investments		0	0
Total assets		0	0
Other accrued liabilities			0
Other liabilities and deferred credits			0
Total liabilities			0
Fair value, inputs, Level 3
Fair Value [Line Items]
Contingent consideration - beginning balance		32,591
Change in fair value of contingent consideration		(6,591)
Earn out payment		(10,000)
Reclass of contingent consideration		(16,000)
Contingent consideration - ending balance		0	32,591
Fair value, inputs, Level 3 \| Fair value measurements nonrecurring
Fair Value [Line Items]
Goodwill		19,798	29,990
Inventories		0	0
Assets held for sale		0	0
Total assets		19,798	29,990
Intangible Assets, Gross (Excluding Goodwill)			0
Fair value, inputs, Level 3 \| Fair value, measurements, recurring
Fair Value [Line Items]
Rabbi Trust investments		0	0
Total assets		0	0
Other accrued liabilities			29,522
Other liabilities and deferred credits			3,069
Total liabilities			$ 32,591
Cougar
Fair Value [Line Items]
Fair Value Inputs, Discount Rate			4.00%
Airnorth
Fair Value [Line Items]
Contingent consideration - beginning balance		$ 6,600
Contingent consideration - ending balance			$ 6,600
Fair Value Inputs, Discount Rate			2.00%