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Summary of Significant Accounting Policies - Deferred Financing Costs (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Gross deferred financing costs	$ 144,981	$ 128,469
Accumulated amortization of deferred financing costs	58,016	$ 41,862
Deferred Financing Costs, Amortization Expense, Rolling Maturity [Abstract]
2020	17,132
2021	16,002
2022	14,888
2023	11,618
2024	8,424
Thereafter	$ 18,901

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Deferred Financing Costs, Amortization Expense, Year Five

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Amount of accumulated amortization of debt issuance costs.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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