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LONG-TERM DEBT: (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Mar. 31, 2018
--- | --- | ---
Debt Instrument [Line Items] |  |
Total long-term debt and capital leases | $ 230,000 | $ 233,293
Less current installments | 0 | 1,583
Less deferred debt financing costs | 3,693 | 3,873
Long-term debt, excluding current installments and deferred debt financing costs | 226,307 | 227,837
Revolving credit facility |  |
Debt Instrument [Line Items] |  |
Total long-term debt and capital leases | 230,000 | 230,000
Other debt and long-term liabilities |  |
Debt Instrument [Line Items] |  |
Total long-term debt and capital leases | $ 0 | $ 3,293

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- Definition Amount, after accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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