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Bank Note Payable, Term Loans Payable and Senior Notes (Details) |  |  |  |  |  |  |  | 12 Months Ended |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 06, 2022 USD ($) | Nov. 30, 2021 USD ($) | Oct. 25, 2021 USD ($) | Sep. 30, 2021 USD ($) | Jun. 04, 2021 USD ($) | Dec. 24, 2020 USD ($) | Oct. 24, 2017 USD ($) | Dec. 31, 2022 USD ($) item | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Feb. 10, 2023 USD ($) | Feb. 10, 2022 USD ($) | Jan. 10, 2022 USD ($) | Sep. 27, 2021 | May 27, 2021 property | Dec. 23, 2020 USD ($) | Mar. 29, 2019 USD ($) | Mar. 07, 2019 USD ($) | Sep. 27, 2018 USD ($) | Aug. 02, 2018 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of unsecured debt |  |  |  |  |  |  |  | $ 110,000,000 | $ 445,000,000 | $ 50,000,000 |  |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt |  |  | $ 700,000 |  |  |  |  | (78,000) | (901,000) |  |  |  |  |  |  |  |  |  |  |
Unsecured term loan |  |  |  |  |  |  |  | 164,750,000 | $ 274,286,000 |  |  |  |  |  |  |  |  |  |  |
Borrowing capacity |  |  |  |  |  |  |  |  |  |  | $ 150,000,000 |  |  |  |  |  |  |  |  |
Borrowings outstanding |  |  |  |  |  |  |  | $ 48,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Leverage Ratio 40 to 45 Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured leverage ratio |  |  |  |  |  |  |  | 40.00% |  |  |  |  |  |  |  |  |  |  |  |
Leverage Ratio 50 to 55 Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured leverage ratio |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |
Office Properties in Atlanta, Georgia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of properties sold | property |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 |  |  |  |  |
Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of loan |  |  |  |  |  |  | $ 200,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed charge coverage ratio |  |  |  |  |  |  | 1.50 |  |  |  |  |  |  |  |  |  |  |  |  |
Series A Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of loan |  |  |  |  |  |  | $ 116,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  |  |  |  | 4.49% |  |  |  |  |  |  |  |  |  |  |
Series B Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of loan |  |  |  |  |  |  | $ 84,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  |  |  |  | 4.76% |  |  |  |  |  |  |  |  |  |  |
Minimum | Leverage Ratio Less Than 35 Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured leverage ratio |  |  |  |  |  |  |  | 35.00% |  |  |  |  |  |  |  |  |  |  |  |
Minimum | Leverage Ratio 35 to 40 Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured leverage ratio |  |  |  |  |  |  |  | 35.00% |  |  |  |  |  |  |  |  |  |  |  |
Minimum | Leverage Ratio 45 to 50 Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured leverage ratio |  |  |  |  |  |  |  | 45.00% |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Leverage Ratio 35 to 40 Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured leverage ratio |  |  |  |  |  |  |  | 40.00% |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Leverage Ratio 40 to 45 Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured leverage ratio |  |  |  |  |  |  |  | 45.00% |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Leverage Ratio 45 to 50 Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured leverage ratio |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Leverage Ratio 50 to 55 Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured leverage ratio |  |  |  |  |  |  |  | 55.00% |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Leverage Ratio Greater Than 55 Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured leverage ratio |  |  |  |  |  |  |  | 55.00% |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured leverage ratio |  |  |  |  |  |  | 60.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured leverage ratio for significant acquisition |  |  |  |  |  |  | 65.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Baa3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Facility fee at period end (as a percent) |  |  |  |  |  |  |  | 0.30% |  |  |  |  |  |  |  |  |  |  |  |
SOFR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |
SOFR | Baa3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 1.40% |  |  |  |  |  |  |  |  |  |  |  |
Fed Funds Effective Rate Overnight Index Swap Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 0.50% |  |  |  |  |  |  |  |  |  |  |  |
Bank's base rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |
Bank's base rate | Baa3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 0.40% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average interest rate (as a percent) |  |  |  |  |  |  |  |  | 1.33% |  |  |  |  |  |  |  |  |  |  |
Weighted average variable interest rate (as a percent) |  |  |  |  |  |  |  | 2.52% |  |  |  |  |  |  |  |  |  |  |  |
Effective interest rate (as a percent) |  |  |  |  |  |  |  | 6.22% |  |  |  |  |  |  |  |  |  |  |  |
Borrowing capacity |  |  |  |  |  |  |  | $ 237,500,000 |  |  |  | $ 237,500,000 | $ 217,500,000 |  |  |  |  |  |  |
Increase to maximum borrowing capacity by exercising an accordion feature |  |  |  |  |  |  |  |  |  |  |  | $ 20,000,000.0 |  |  |  |  |  |  |  |
Borrowings outstanding |  |  |  |  |  |  |  | 48,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |
Maximum allowable borrowing capacity upon exercising an accordion feature |  |  |  |  |  |  |  | $ 750,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Facility fee at period end (as a percent) |  |  |  |  |  |  |  | 0.35% |  |  |  |  |  |  |  |  |  |  |  |
Percentage of funds from operations which dividend distributions cannot exceed per the BofA Credit Agreement |  |  |  |  |  |  |  | 95.00% |  |  |  |  |  |  |  |  |  |  |  |
Investment Grade Credit Rating | item |  |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Leverage Ratio Less Than 35 Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 0.55% |  |  |  |  |  |  |  |  |  |  |  |
Facility fee (as a percent) |  |  |  |  |  |  |  | 0.30% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Leverage Ratio 35 to 40 Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 0.65% |  |  |  |  |  |  |  |  |  |  |  |
Facility fee (as a percent) |  |  |  |  |  |  |  | 0.30% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Leverage Ratio 40 to 45 Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 0.75% |  |  |  |  |  |  |  |  |  |  |  |
Facility fee (as a percent) |  |  |  |  |  |  |  | 0.35% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Leverage Ratio 45 to 50 Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 0.95% |  |  |  |  |  |  |  |  |  |  |  |
Facility fee (as a percent) |  |  |  |  |  |  |  | 0.35% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Leverage Ratio 50 to 55 Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 1.15% |  |  |  |  |  |  |  |  |  |  |  |
Facility fee (as a percent) |  |  |  |  |  |  |  | 0.35% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Leverage Ratio Greater Than 55 Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 1.35% |  |  |  |  |  |  |  |  |  |  |  |
Facility fee (as a percent) |  |  |  |  |  |  |  | 0.40% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | A3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Facility fee at period end (as a percent) |  |  |  |  |  |  |  | 0.125% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Baa1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Facility fee at period end (as a percent) |  |  |  |  |  |  |  | 0.15% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Baa2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Facility fee at period end (as a percent) |  |  |  |  |  |  |  | 0.20% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Baa3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Facility fee at period end (as a percent) |  |  |  |  |  |  |  | 0.25% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | SOFR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured leverage ratio |  |  |  |  |  |  |  | 1.75% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | SOFR | Leverage Ratio Less Than 35 Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 1.55% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | SOFR | Leverage Ratio 35 to 40 Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 1.65% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | SOFR | Leverage Ratio 40 to 45 Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 1.75% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | SOFR | Leverage Ratio 45 to 50 Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 1.95% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | SOFR | Leverage Ratio 50 to 55 Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 2.15% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | SOFR | Leverage Ratio Greater Than 55 Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 2.35% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | SOFR | A3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 0.725% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | SOFR | Baa1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 0.775% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | SOFR | Baa2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 0.85% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | SOFR | Baa3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 1.05% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | One Month SOFR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 0.11448% |  |  |  |  |  |  |  |  |  |  |  |
Term of SOFR |  |  |  |  |  |  |  | 1 month |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Three month SOFR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 0.26161% |  |  |  |  |  |  |  |  |  |  |  |
Term of SOFR |  |  |  |  |  |  |  | 3 months |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Six month SOFR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 0.42826% |  |  |  |  |  |  |  |  |  |  |  |
Term of SOFR |  |  |  |  |  |  |  | 6 months |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Bank's base rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured leverage ratio |  |  |  |  |  |  |  | 0.75% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Bank's base rate | A3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Bank's base rate | Baa1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Bank's base rate | Baa2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Bank's base rate | Baa3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 0.05% |  |  |  |  |  |  |  |  |  |  |  |
2012 Revolver | Federal Funds Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 0.50% |  |  |  |  |  |  |  |  |  |  |  |
2012 Revolver | One month LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |
Unsecured Debt [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of loan | $ 400,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of unsecured debt | 110,000,000 |  | $ 200,000,000 | $ 90,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt | $ 100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured term loan |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |
Weighted average interest rate (as a percent) |  |  |  |  |  |  |  |  | 1.85% |  |  |  |  |  |  |  |  |  |  |
Effective interest rate (as a percent) | 2.65% |  |  |  |  |  |  |  | 1.84% |  |  |  |  |  |  |  |  |  |  |
Unsecured Debt [Member] | LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate at period end (as a percent) | 1.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.12% |  |  |  |  |  |
Unsecured Debt [Member] | Bank's base rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate at period end (as a percent) | 0.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
JPM Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 150,000,000
Repayments of unsecured debt |  |  |  |  | $ 100,000,000 | $ 50,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt |  |  |  |  | (100,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured term loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 100,000,000 |  |  |  |
Portion of future LIBOR-based rate risk |  | $ 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
JPM Term Loan | Hedged portion |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payment to terminate interest rate swap |  |  |  |  | 1,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Portion of future LIBOR-based rate risk |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 100,000,000 | $ 100,000,000 |  |
JPM Term Loan | LIBOR | Hedged portion |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.44% |  |  |
BMO Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 220,000,000 |
Effective interest rate (as a percent) |  |  |  |  |  |  |  | 4.04% |  |  |  |  |  |  |  |  |  |  |  |
Maximum allowable borrowing capacity upon exercising an accordion feature |  |  |  |  |  |  |  | $ 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |
BMO Term Loan | Federal Funds Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 0.50% |  |  |  |  |  |  |  |  |  |  |  |
BMO Term Loan | LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate at period end (as a percent) |  |  |  |  |  |  |  | 1.65% |  |  |  |  |  |  |  |  |  |  |  |
Fixed rate (as a percent) |  |  |  |  |  |  |  | 2.32% |  |  |  |  |  |  |  |  |  |  |  |
BMO Term Loan | LIBOR | Hedged portion |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed rate (as a percent) |  |  |  |  |  |  |  | 2.39% |  |  |  |  |  |  |  |  |  |  |  |
BMO Term Loan | LIBOR | A- | A3 | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 85.00% |  |  |  |  |  |  |  |  |  |  |  |
BMO Term Loan | LIBOR | BBB+ | Baa1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 90.00% |  |  |  |  |  |  |  |  |  |  |  |
BMO Term Loan | LIBOR | BBB | Baa2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |
BMO Term Loan | LIBOR | BBB- | Baa3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 125.00% |  |  |  |  |  |  |  |  |  |  |  |
BMO Term Loan | LIBOR | BBB- | Baa3 | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 165.00% |  |  |  |  |  |  |  |  |  |  |  |
BMO Term Loan | Bank's base rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate at period end (as a percent) |  |  |  |  |  |  |  | 0.65% |  |  |  |  |  |  |  |  |  |  |  |
BMO Term Loan | Bank's base rate | BBB- | Baa3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |
BMO Term Loan | Bank's base rate | BBB- | Baa3 | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 65.00% |  |  |  |  |  |  |  |  |  |  |  |
BMO Term Loan | One month LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  |  |  |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |
Tranche A Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 55,000,000 |
Loss on extinguishment of debt |  | $ 100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payment to terminate interest rate swap |  |  |  |  | $ 600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tranche B Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of loan |  |  |  |  |  |  |  | $ 165,000,000 |  |  |  |  |  |  |  |  |  |  | $ 165,000,000 |

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- Definition Represents the percentage of good faith estimate of projected funds from operations in which dividend distributions cannot exceed pursuant to the debt covenants under the revolving credit facility agreement. + References No definition available. + Details
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- Definition Maximum amount of borrowing capacity allowable that may be issued upon the exercise of the accordion feature of the debt agreement subject to receipt of lender commitments and satisfaction of certain customary conditions. + References No definition available. + Details
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- Definition Represents the term of the Secured Overnight Financing Rate (SOFR) used to calculate the interest on the revolving credit facility. + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123466204&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=126972273&loc=d3e12355-112629 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126972273&loc=d3e12317-112629 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
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- Definition Amount of liability hedged in fair value hedging relationship. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4EE -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL109999712-113959 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 + Details
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- Definition The effective interest rate at the end of the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Weighted average interest rate of long-term debt outstanding calculated over time. + References No definition available. + Details
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- Definition The cash outflow for a financial contract that meets the hedge criteria as either cash flow hedge, fair value hedge or hedge of net investment in foreign operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 27 -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3581-108585 + Details
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- Definition The cash outflow to repay long-term debt that is not secured by collateral. Excludes repayments of tax exempt unsecured debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585 + Details
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