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Notes Payable, Revolving Credit Facility, Interest and Amortization of Deferred Debt Costs - Interest Expense and Amortization of Deferred Debt Costs (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Debt Disclosure [Abstract] |  |  |  |
Interest incurred | $ 12,837 | $ 12,988 | $ 25,856 | $ 25,868
Amortization of deferred debt costs | 387 | 375 | 760 | 760
Capitalized interest | (1,137) | (2,522) | (4,905) | (4,668)
Interest expense | 12,087 | 10,841 | 21,711 | 21,960
Less: Interest income | 68 | 48 | 98 | 100
Interest expense, net and amortization of deferred debt costs | $ 12,019 | $ 10,793 | $ 21,613 | $ 21,860

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