Debt - Schedule of Debt Principal Payments (Details) $ in Thousands	Jun. 30, 2018 USD ($)
Long-term Debt, Fiscal Year Maturity
2018 (remainder)	$ 134,796
2019	73,412
2020	425,173
2021	447,246
2022	348,438
Thereafter through 2031	480,185
Total principal payments	1,909,250
Deferred financing cost	(6,839)
Unamortized discount, net	(4,615)
Total	$ 1,897,796

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, after accumulated amortization, of debt discount (premium).

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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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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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 in the remainder of the 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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