Notes Payable - Terms of Notes Payable (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Long-term debt	$ 2,341,841	$ 2,240,025
Unamortized premium	0	3,910
Unamortized loan costs	(7,235)	(6,426)
Total Notes Payable	$ 2,334,606	2,237,509
Weighted average maturity period of notes payable outstanding	4 years
Unsecured Notes
Debt Instrument [Line Items]
Long-term debt	$ 1,806,600	1,578,500
Credit Facility
Debt Instrument [Line Items]
Interest Rate	5.30%
Long-term debt	$ 56,600	228,500
Term Loan \| Term Loan Unsecured Due 2025
Debt Instrument [Line Items]
Interest Rate	5.45%
Long-term debt	$ 400,000	0
Term Loan \| Term Loan Unsecured Due 2024
Debt Instrument [Line Items]
Interest Rate	5.38%
Long-term debt	$ 350,000	350,000
Senior Notes, Unsecured \| Senior Note, Unsecured Due 2029
Debt Instrument [Line Items]
Interest Rate	3.95%
Long-term debt	$ 275,000	275,000
Senior Notes, Unsecured \| Senior Note, Unsecured Due 2025
Debt Instrument [Line Items]
Interest Rate	3.91%
Long-term debt	$ 250,000	250,000
Senior Notes, Unsecured \| Senior Note, Unsecured Due 2028
Debt Instrument [Line Items]
Interest Rate	3.86%
Long-term debt	$ 250,000	250,000
Senior Notes, Unsecured \| Senior Note, Unsecured Due 2027
Debt Instrument [Line Items]
Interest Rate	3.78%
Long-term debt	$ 125,000	125,000
Senior Notes, Unsecured \| Senior Note, Unsecured Due 2027
Debt Instrument [Line Items]
Interest Rate	4.09%
Long-term debt	$ 100,000	100,000
Secured Mortgage Notes
Debt Instrument [Line Items]
Long-term debt	535,241	661,525
Total Notes Payable	$ 535,200
Secured Mortgage Notes \| Fifth Third Center
Debt Instrument [Line Items]
Interest Rate	3.37%
Long-term debt	$ 130,168	133,672
Secured Mortgage Notes \| Terminus
Debt Instrument [Line Items]
Interest Rate	6.34%
Long-term debt	$ 221,000	184,239
Secured Mortgage Notes \| Colorado Tower
Debt Instrument [Line Items]
Interest Rate	3.45%
Long-term debt	$ 109,552	112,150
Secured Mortgage Notes \| Domain 10
Debt Instrument [Line Items]
Interest Rate	3.75%
Long-term debt	$ 74,521	$ 76,412
Secured Mortgage Notes \| Promenade Tower
Debt Instrument [Line Items]
Interest Rate		4.27%
Long-term debt	0	$ 89,052
Secured Mortgage Notes \| Legacy Union One
Debt Instrument [Line Items]
Interest Rate		4.24%
Long-term debt	0	$ 66,000
Secured Mortgage Notes \| Terminus 100
Debt Instrument [Line Items]
Long-term debt	123,000
Secured Mortgage Notes \| Terminus 200
Debt Instrument [Line Items]
Long-term debt	$ 98,000

Debt Instrument, Weighted Average Maturity Period

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

+ Details

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount, after accumulated amortization, of debt premium.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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- Definition

Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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