Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
-Topic 420
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions		1 Months Ended	12 Months Ended
	Jun. 10, 2016	Jul. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Sep. 30, 2020
Loss Contingencies [Line Items]
Community development related to claim					$ 220.2
Executive Chair \| Performance Shares
Loss Contingencies [Line Items]
Shares granted vested and accelerated			34,276	34,276
Executive Chair \| Subsequent Event
Loss Contingencies [Line Items]
Severance costs		$ 1.9
OCD vs ICF Emergency
Loss Contingencies [Line Items]
Loss contingency damages sought value	$ 200.8
Road Home Contract
Loss Contingencies [Line Items]
Contract term, period	3 years
Contract award, value	$ 912.0