DEBT AND OTHER OBLIGATIONS - Maturities of Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Maturities of debt
2019 (remainder of year)	$ 5,974
2020	8,220
2021	7,193
2022	5,849
2023	5,329
Thereafter	475,999
Total debt before unamortized discount and debt issuance costs, net	508,564	$ 520,080
Unamortized discount and debt issuance costs, net	(9,264)	(9,407)
Total debt	$ 499,300	$ 510,673

Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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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.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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