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Commitments and Contingencies (Tables) | 12 Months Ended
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Mar. 31, 2018
Commitments and Contingencies [Abstract] |
Payments due by period under long-term debt, other financing instruments and commitments |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  | Within |  | 1 to |  | 3 to |  | After
﻿ |  | Total |  | 1 Year |  | 3 Years |  | 5 Years |  | 5 Years
﻿ |  | (Dollars in thousands)
﻿Principal payments on long-term debt |  | $ | 148,108 |  | $ | 40 |  | $ | 148,068 |  |  |  |  |  |
﻿Capital lease commitments/financing obligations |  |  | 246,169 |  |  | 18,949 |  |  | 43,047 |  | $ | 49,542 |  | $ | 134,631
﻿Operating lease commitments |  |  | 159,092 |  |  | 34,285 |  |  | 55,235 |  |  | 34,533 |  |  | 35,039
﻿Other liabilities |  |  | 3,533 |  |  | 800 |  |  | 1,600 |  |  | 1,133 |  |  | —
﻿Total |  | $ | 556,902 |  | $ | 54,074 |  | $ | 247,950 |  | $ | 85,208 |  | $ | 169,670
﻿

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- Definition Tabular disclosure of the aggregate amount of payments due on known contractual obligations for the five years following the date of the latest balance sheet and the combined aggregate amount of maturities of known contractual obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 303 -Paragraph a -Subparagraph 5 + Details
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