XML 35 R89.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Information by Business Segment (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 segment | Dec. 31, 2012 | Dec. 31, 2011
Segment Reporting [Abstract] |  |  |
Number of primary office property segments (in number of segments) | 10 |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | $ 498,633 | $ 493,100 | $ 495,832
Property operating expenses | 180,704 | 180,735 | 187,820
NOI from real estate operations | 317,929 | 312,365 | 308,012
Segment assets | 3,629,952 | 3,653,759 |
Operating Segment Total |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 498,633 | 493,100 | 495,832
Property operating expenses | 180,704 | 180,735 | 187,820
NOI from real estate operations | 317,929 | 312,365 | 308,012
Additions to long-lived assets | 56,877 | 106,801 | 105,109
Transfers from non-operating properties | 264,290 | 220,997 | 144,388
Segment assets | 2,905,630 | 2,945,930 | 3,039,440
Baltimore and Washington Corridor |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 237,869 | 238,488 | 237,162
Property operating expenses | 80,554 | 83,050 | 86,782
NOI from real estate operations | 157,315 | 155,438 | 150,380
Additions to long-lived assets | 28,087 | 25,921 | 33,142
Transfers from non-operating properties | 50,105 | 65,108 | 67,752
Segment assets | 1,243,099 | 1,267,357 | 1,350,678
Northern Virginia |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 92,010 | 79,574 | 74,214
Property operating expenses | 31,973 | 29,103 | 28,518
NOI from real estate operations | 60,037 | 50,471 | 45,696
Additions to long-lived assets | 13,090 | 65,157 | 14,770
Transfers from non-operating properties | 61,434 | 44,250 | 4
Segment assets | 616,082 | 569,860 | 484,392
San Antonio |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 33,060 | 32,018 | 30,066
Property operating expenses | 17,631 | 16,499 | 14,371
NOI from real estate operations | 15,429 | 15,519 | 15,695
Additions to long-lived assets | 335 | 280 | 0
Transfers from non-operating properties | 0 | 468 | 17,638
Segment assets | 118,299 | 119,369 | 131,412
Huntsville |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 5,050 | 3,867 | 1,368
Property operating expenses | 1,282 | 689 | 226
NOI from real estate operations | 3,768 | 3,178 | 1,142
Additions to long-lived assets | 3,563 | 26 | 26,837
Transfers from non-operating properties | 48,799 | 0 | 0
Segment assets | 77,773 | 28,730 | 32,341
Washington, DC - Capitol Riverfront |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 16,863 | 16,697 | 17,878
Property operating expenses | 7,844 | 7,555 | 6,762
NOI from real estate operations | 9,019 | 9,142 | 11,116
Additions to long-lived assets | 2,604 | 317 | 2,794
Transfers from non-operating properties | 0 | 0 | 0
Segment assets | 98,962 | 104,544 | 111,318
St. Mary's and King George Counties |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 16,568 | 16,392 | 14,366
Property operating expenses | 5,028 | 4,745 | 4,142
NOI from real estate operations | 11,540 | 11,647 | 10,224
Additions to long-lived assets | 2,341 | 1,844 | 1,638
Transfers from non-operating properties | 14 | 289 | 16,858
Segment assets | 96,143 | 98,027 | 100,818
Greater Baltimore |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 42,653 | 52,616 | 70,668
Property operating expenses | 16,583 | 19,917 | 29,543
NOI from real estate operations | 26,070 | 32,699 | 41,125
Additions to long-lived assets | 2,913 | 9,690 | 21,086
Transfers from non-operating properties | 360 | 37,558 | 16,307
Segment assets | 303,823 | 320,548 | 402,067
Greater Philadelphia |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 11,924 | 9,698 | 7,458
Property operating expenses | 3,431 | 2,562 | 1,402
NOI from real estate operations | 8,493 | 7,136 | 6,056
Additions to long-lived assets | 406 | 286 | 516
Transfers from non-operating properties | 28,034 | 10,626 | 5,446
Segment assets | 104,657 | 78,798 | 102,572
Colorado Springs |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 25,290 | 24,987 | 23,675
Property operating expenses | 9,002 | 9,231 | 8,758
NOI from real estate operations | 16,288 | 15,756 | 14,917
Additions to long-lived assets | 2,940 | 2,929 | 4,085
Transfers from non-operating properties | 5,438 | 4,295 | 214
Segment assets | 0 | 175,830 | 181,384
Other |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 10,075 | 12,116 | 13,923
Property operating expenses | 1,016 | 2,569 | 3,887
NOI from real estate operations | 9,059 | 9,547 | 10,036
Additions to long-lived assets | 0 | 152 | 182
Transfers from non-operating properties | 0 | 394 | 0
Segment assets | 80,002 | 82,090 | 98,808
Operating Wholesale Data Center |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 7,271 | 6,647 | 5,054
Property operating expenses | 6,360 | 4,815 | 3,429
NOI from real estate operations | 911 | 1,832 | 1,625
Additions to long-lived assets | 598 | 199 | 59
Transfers from non-operating properties | 70,106 | 58,009 | 20,169
Segment assets | $ 166,790 | $ 100,777 | $ 43,650

X
- Definition Represents the number of reportable primary office property segments. + References No definition available. + Details
Name: | ofc_NumberOfPrimaryOfficePropertySegments
Namespace Prefix: | ofc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Costs incurred and are directly related to generating revenues from leased and rented property or equipment for the reportable segment. + References No definition available. + Details
Name: | ofc_SegmentReportingDirectCostsOfLeasedAndRentedPropertyOrEquipment
Namespace Prefix: | ofc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Revenue from real estate operations for the reportable segment less property operating expenses for the reportable segment. + References No definition available. + Details
Name: | ofc_SegmentReportingOperatingIncome
Namespace Prefix: | ofc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents amounts transferred from non operating properties to reported segments during the period resulting from properties being placed into service. + References No definition available. + Details
Name: | ofc_SegmentReportingTransfersFromNonOperatingProperties
Namespace Prefix: | ofc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 + Details
Name: | us-gaap_Assets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentAdditions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The aggregate revenue from real estate operations during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
Name: | us-gaap_RealEstateRevenueNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_SegmentReportingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration