Secured Notes Payable and Revolving Credit Facility, Net - Loan Costs and Accumulated Amortization (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Debt Disclosure [Abstract]
Loan premium accumulated amortization	$ 900		$ 900		$ 500
Accumulated amortization on deferred loan costs	34,400		34,400		$ 30,700
Loan Costs Included In Interest Expense
Loan premium amortized and written off			(2,043)	$ (102)
Deferred loan costs amortized and written off			3,791	4,380
Interest Expense
Loan Costs Included In Interest Expense
Loan premium amortized and written off	(1,828)	$ (51)	(2,043)	(102)
Deferred loan costs amortized and written off	1,915	1,887	3,791	3,804
Loan costs expensed	965	576	965	576
Total	$ 1,052	$ 2,412	$ 2,713	$ 4,278

Accumulated Amortization, Loan Premium

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Loan Costs, Amortization Of Discount (Premium), Debt Issuance Cost, Write-offs, And Expense

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Loan Costs Included In Interest Expense [Abstract]

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Amount of accumulated amortization of debt issuance costs.

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Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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Amount of amortization expense attributable to debt issuance costs.

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Represents the charge against earnings during the period for commitment fees and debt issuance expenses.

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