Summary of Significant Accounting Policies (Real Estate Segment Restructuring Plan) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2020
Restructuring Reserve [Roll Forward]
Restructuring charges	$ 250	$ 2,067
Real estate
Restructuring Reserve [Roll Forward]
Accrual balance as of January 1, 2020		0
Restructuring charges		3,281
Utilized		(3,231)
Accrual balance as of June 30, 2020	50	50
Real estate \| Employee Severance and Benefits
Restructuring Reserve [Roll Forward]
Accrual balance as of January 1, 2020		0
Restructuring charges		1,785
Utilized		(1,735)
Accrual balance as of June 30, 2020	50	50
Real estate \| Other
Restructuring Reserve [Roll Forward]
Accrual balance as of January 1, 2020		0
Restructuring charges		282
Utilized		(282)
Accrual balance as of June 30, 2020	0	0
Real estate \| Non-Cash Loss on Fixed Assets
Restructuring Reserve [Roll Forward]
Accrual balance as of January 1, 2020		0
Restructuring charges		1,214
Utilized		(1,214)
Accrual balance as of June 30, 2020	$ 0	$ 0

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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