OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Other Accrued Liabilities Table (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accrued lease costs	$ 11,708	$ 5,601
Deferred OEM cost recovery	8,082	0
Eastern overdraft liability	8,989	5,829
Accrued property and equipment	4,874	3,546
Deferred gain on sale leasebacks	1,305	1,655
Other operating accruals	31,020	30,048
Other accrued liabilities	$ 65,978	$ 46,679