Discontinued Operations - Narrative (Details) - Discontinued Operations, Disposed of by Sale - ASC - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	May 14, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of discontinued operation						$ 258,300
Escrow deposit			$ 1,100
Gain on Sale of Discontinued Operations, Net of Taxes	$ (300)	$ 3,600	3,300	$ 0	$ 0
Interest expense			$ 2,000	$ 6,100	$ 5,700

Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

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Amount of interest expense attributable to disposal group, including, but not limited to, discontinued operation.

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The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

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