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DEBT - Components of Long-term Debt (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Aug. 14, 2018 | May 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Nov. 15, 2016 | Nov. 10, 2016 | Nov. 04, 2015
--- | --- | --- | --- | --- | --- | --- | --- | ---
Line of Credit Facility |  |  |  |  |  |  |  |
Principal amount | $ 551,420 |  |  | $ 519,083 |  |  |  |
Principal, including PIK interest | 551,420 |  |  | 524,424 |  |  |  |
PIK interest |  |  |  | 5,341 |  |  |  |
Less: Unamortized debt financing costs | (16,272) |  |  | (9,032) |  |  |  |
Less: Current portion | (66,320) |  |  | (24,497) |  |  |  |
Long-term debt, net | 468,828 |  |  | 490,895 |  |  |  |
Secured Debt | $460 Million Credit Facility |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |
Principal amount | 445,000 |  |  |  |  |  |  |
Less: Unamortized debt financing costs | (14,423) |  |  |  |  |  |  |
Maximum borrowing capacity | 460,000 |  | $ 460,000 |  |  |  |  |
Secured Debt | $108 Million Credit Facility |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |
Principal amount | 106,420 |  |  |  |  |  |  |
Less: Unamortized debt financing costs | (1,849) |  |  |  |  |  |  |
Maximum borrowing capacity | 108,000 | $ 108,000 |  |  |  |  |  |
Secured Debt | $400 Million Credit Facility |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |
Principal amount |  |  |  | 399,600 |  |  |  |
PIK interest | $ 0 |  |  | 5,341 |  |  |  |
Less: Unamortized debt financing costs |  |  |  | (6,332) |  |  |  |
Maximum borrowing capacity |  |  |  | 400,000 | $ 400,000 |  | $ 400,000 |
Secured Debt | 2014 Term Loan Facilities |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |
Principal amount |  |  |  | 25,544 |  |  |  |
Less: Unamortized debt financing costs |  |  |  | (1,330) |  |  |  |
Line of Credit Facility | $98 Million Credit Facility |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |
Principal amount |  |  |  | 93,939 |  |  |  |
Less: Unamortized debt financing costs |  |  |  | (1,370) |  |  |  |
Maximum borrowing capacity |  |  |  | $ 98,000 |  | $ 98,000 |  | $ 98,000

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- Definition Amount of long-term debt including PIK interest before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + References No definition available. + Details
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: 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(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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