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Summary of Significant Accounting Policies (Discontinued Operations - Cash Flows) (Details) - Discontinued Operations - Held for Sale - Net Lease Business Segment - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from discontinued operations
Cash flows provided by operating activities	$ 85,249	$ 112,783	$ 117,425
Cash flows provided by (used in) investing activities	$ 2,030	$ (51,998)	$ (74,028)

X

- Definition

Amount of cash inflow (outflow) of investing activities of discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 24
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3521-108585

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
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-Section 50
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- Definition

Amount of cash inflow (outflow) of operating activities of discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 24
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-Name Accounting Standards Codification
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-Section 50
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