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Subsequent Events (Details) $ / shares in Units, $ in Millions |  |  |  | 3 Months Ended
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Jul. 13, 2021 USD ($) property | Jul. 09, 2021 USD ($) property | Jul. 06, 2021 $ / shares | Jun. 30, 2021 ft² $ / shares | Mar. 31, 2021 $ / shares | Jun. 30, 2020 ft² $ / shares | Mar. 31, 2020 $ / shares
Subsequent Events |  |  |  |  |  |  |
Cash dividend declared per share (in dollars per share) | $ / shares |  |  |  | $ 0.09 | $ 0.09 | $ 0.09 | $ 0.09
Area of Real Estate Property | ft² |  |  |  | 8,228,148 |  | 9,508,226 |
Cash distribution declared | Subsequent Events. |  |  |  |  |  |  |
Subsequent Events |  |  |  |  |  |  |
Cash dividend declared per share (in dollars per share) | $ / shares |  |  | $ 0.09 |  |  |  |
Office properties in Chantilly, VA | Subsequent Events. |  |  |  |  |  |  |
Subsequent Events |  |  |  |  |  |  |
Number of office properties to be sold | property |  | 2 |  |  |  |  |
Sale price | $ |  | $ 40 |  |  |  |  |
Office properties in Chesterfield, MO | Subsequent Events. |  |  |  |  |  |  |
Subsequent Events |  |  |  |  |  |  |
Number of office properties to be sold | property | 2 |  |  |  |  |  |
Sale price | $ | $ 67 |  |  |  |  |  |

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
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- Definition The cash inflow from the sale of formerly productive land held for sale, anything permanently fixed to it, including buildings, structures on it, and so forth. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585 + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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