Fixed Assets - Narrative (Details)			3 Months Ended	12 Months Ended
	May 31, 2023 USD ($) ft²	Mar. 31, 2023 USD ($) ft²	Mar. 31, 2023 USD ($) ft²	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Property, Plant and Equipment [Line Items]
Depreciation expense				$ 33,800,000	$ 34,300,000	$ 32,500,000
Net gains (losses) on sales of fixed assets				5,879,000	(86,000)	17,000
Sale price received in cash				29,876,000	3,000	$ 27,000
Promissory Note
Property, Plant and Equipment [Line Items]
Interest rate, stated percentage		7.00%	7.00%
Promissory note, term (in years)			4 years
Clearwater, Florida Office Building
Property, Plant and Equipment [Line Items]
Sale leaseback transaction, area of property leased back | ft²		14,883	14,883
Sale leaseback transaction, percentage of property sold that has been leased back		9.00%
Sale leaseback transaction, lease term (in years)		5 years
Sale leaseback transaction, annual base rent		$ 400,000
Clearwater, Florida Office Building | Disposal Group, Held-for-sale, Not Discontinued Operations
Property, Plant and Equipment [Line Items]
Property held for sale					20,200,000
Net gains (losses) on sales of fixed assets			$ (1,800,000)		$ (800,000)
Clearwater, Florida Office Building | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Property, Plant and Equipment [Line Items]
Sale price of fixed asset		19,600,000	19,600,000
Promissory note received from sale of fixed asset			9,800,000
Sale price received in cash			8,500,000
Rancho Cucamonga, California Office Building
Property, Plant and Equipment [Line Items]
Sale leaseback transaction, area of property leased back | ft²	6,000
Sale leaseback transaction, percentage of property sold that has been leased back	5.00%
Sale leaseback transaction, lease term (in years)	2 years
Sale leaseback transaction, annual base rent	$ 200,000
Rancho Cucamonga, California Office Building | Disposal Group, Held-for-sale, Not Discontinued Operations
Property, Plant and Equipment [Line Items]
Property held for sale		$ 13,600,000	$ 13,600,000
Rancho Cucamonga, California Office Building | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Property, Plant and Equipment [Line Items]
Net gains (losses) on sales of fixed assets				7,900,000
Sale price of fixed asset	$ 22,300,000
Sale price received in cash				21,400,000
Brea, California Office Building | Disposal Group, Held-for-sale, Not Discontinued Operations
Property, Plant and Equipment [Line Items]
Property held for sale				$ 10,800,000