Fair Value Measurements - Narratives (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Deferred financing costs	$ 6,032	$ 5,800
Unamortized premium	$ 2,011	$ 2,100

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

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