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Information by Business Segment (Tables) | 3 Months Ended
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Mar. 31, 2013
Segment Reporting [Abstract] |
Schedule of segment financial information for real estate operations | The table below reports segment financial information for our reportable segments (in thousands). We measure the performance of our segments through the measure we define as NOI from real estate operations, which is derived by subtracting property operating expenses from revenues from real estate operations.
| Operating Office Property Segments |  |  |  |
| Baltimore/ Washington Corridor |  | Northern Virginia |  | San Antonio |  | Washington, DC - Capitol Riverfront |  | St. Mary’s & King George Counties |  | Greater Baltimore |  | Suburban Maryland |  | Colorado Springs |  | Greater Philadelphia |  | Other |  | Operating Wholesale Data Center |  | Total
Three Months Ended March 31, 2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues from real estate operations | $ | 56,436 |  |  | $ | 22,942 |  |  | $ | 7,757 |  |  | $ | 4,244 |  |  | $ | 3,992 |  |  | $ | 10,719 |  |  | $ | 2,224 |  |  | $ | 6,733 |  |  | $ | 2,487 |  |  | $ | 3,190 |  |  | $ | 1,353 |  |  | $ | 122,077 |
Property operating expenses | 19,266 |  |  | 7,817 |  |  | 3,888 |  |  | 1,949 |  |  | 1,193 |  |  | 4,168 |  |  | 787 |  |  | 2,448 |  |  | 838 |  |  | 396 |  |  | 1,316 |  |  | 44,066 |
NOI from real estate operations | $ | 37,170 |  |  | $ | 15,125 |  |  | $ | 3,869 |  |  | $ | 2,295 |  |  | $ | 2,799 |  |  | $ | 6,551 |  |  | $ | 1,437 |  |  | $ | 4,285 |  |  | $ | 1,649 |  |  | $ | 2,794 |  |  | $ | 37 |  |  | $ | 78,011 |
Additions to long-lived assets | $ | 2,731 |  |  | $ | 1,544 |  |  | $ | 10 |  |  | $ | 157 |  |  | $ | 275 |  |  | $ | 702 |  |  | $ | 29 |  |  | $ | 315 |  |  | $ | — |  |  | $ | 91 |  |  | $ | — |  |  | $ | 5,854 |
Transfers from non-operating properties | $ | 22,665 |  |  | $ | 9,839 |  |  | $ | — |  |  | $ | — |  |  | $ | 6 |  |  | $ | 113 |  |  | $ | 332 |  |  | $ | 1,784 |  |  | $ | 7,050 |  |  | $ | 24,239 |  |  | $ | 65,568 |  |  | $ | 131,596 |
Segment assets at March 31, 2013 | $ | 1,226,544 |  |  | $ | 574,970 |  |  | $ | 119,145 |  |  | $ | 102,928 |  |  | $ | 97,346 |  |  | $ | 317,953 |  |  | $ | 53,250 |  |  | $ | 178,622 |  |  | $ | 85,017 |  |  | $ | 133,181 |  |  | $ | 166,920 |  |  | $ | 3,055,876 |
Three Months Ended March 31, 2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues from real estate operations | $ | 56,250 |  |  | $ | 18,560 |  |  | $ | 7,608 |  |  | $ | 3,894 |  |  | $ | 4,212 |  |  | $ | 15,372 |  |  | $ | 5,749 |  |  | $ | 6,453 |  |  | $ | 2,172 |  |  | $ | 3,618 |  |  | $ | 1,416 |  |  | $ | 125,304 |
Property operating expenses | 19,674 |  |  | 7,230 |  |  | 3,762 |  |  | 1,885 |  |  | 1,212 |  |  | 5,761 |  |  | 2,459 |  |  | 2,307 |  |  | 513 |  |  | 688 |  |  | 1,055 |  |  | 46,546 |
NOI from real estate operations | $ | 36,576 |  |  | $ | 11,330 |  |  | $ | 3,846 |  |  | $ | 2,009 |  |  | $ | 3,000 |  |  | $ | 9,611 |  |  | $ | 3,290 |  |  | $ | 4,146 |  |  | $ | 1,659 |  |  | $ | 2,930 |  |  | $ | 361 |  |  | $ | 78,758 |
Additions to long-lived assets | $ | 1,864 |  |  | $ | 1,661 |  |  | $ | — |  |  | $ | (729 | ) |  | $ | 167 |  |  | $ | 719 |  |  | $ | 771 |  |  | $ | 99 |  |  | $ | — |  |  | $ | 26 |  |  | $ | — |  |  | $ | 4,578 |
Transfers from non-operating properties | $ | 25,594 |  |  | $ | — |  |  | $ | 362 |  |  | $ | — |  |  | $ | 556 |  |  | $ | 365 |  |  | $ | 335 |  |  | $ | 316 |  |  | $ | 7,303 |  |  | $ | — |  |  | $ | — |  |  | $ | 34,831 |
Segment assets at March 31, 2012 | $ | 1,231,949 |  |  | $ | 480,457 |  |  | $ | 120,024 |  |  | $ | 108,649 |  |  | $ | 99,946 |  |  | $ | 370,754 |  |  | $ | 147,197 |  |  | $ | 181,241 |  |  | $ | 109,432 |  |  | $ | 114,108 |  |  | $ | 43,390 |  |  | $ | 3,007,147 |
Schedule of reconciliation of segment revenues to total revenues | The following table reconciles our segment revenues to total revenues as reported on our consolidated statements of operations (in thousands):
| For the Three Months Ended March 31,
| 2013 |  | 2012
Segment revenues from real estate operations | $ | 122,077 |  |  | $ | 125,304 |
Construction contract and other service revenues | 14,262 |  |  | 21,534 |
Less: Revenues from discontinued operations (Note 14) | (5,342 | ) |  | (14,643 | )
Total revenues | $ | 130,997 |  |  | $ | 132,195 |
Schedule of reconciliation of segment property operating expenses to total property operating expenses | The following table reconciles our segment property operating expenses to property operating expenses as reported on our consolidated statements of operations (in thousands):
| For the Three Months Ended March 31,
| 2013 |  | 2012
Segment property operating expenses | $ | 44,066 |  |  | $ | 46,546 |
Less: Property operating expenses from discontinued operations (Note 14) | (1,491 | ) |  | (5,293 | )
Total property operating expenses | $ | 42,575 |  |  | $ | 41,253 |
Schedule of computation of net operating income from service operations | The table below sets forth the computation of our NOI from service operations (in thousands):
| For the Three Months Ended March 31,
| 2013 |  | 2012
Construction contract and other service revenues | $ | 14,262 |  |  | $ | 21,534 |
Construction contract and other service expenses | (13,477 | ) |  | (20,607 | )
NOI from service operations | $ | 785 |  |  | $ | 927 |
Schedule of reconciliation of net operating income from real estate operations and service operations to (loss) income from continuing operations | The following table reconciles our NOI from real estate operations for reportable segments and NOI from service operations to income from continuing operations as reported on our consolidated statements of operations (in thousands):
| For the Three Months Ended March 31,
| 2013 |  | 2012
NOI from real estate operations | $ | 78,011 |  |  | $ | 78,758 |
NOI from service operations | 785 |  |  | 927 |
Interest and other income | 946 |  |  | 1,217 |
Equity in income (loss) of unconsolidated entities | 41 |  |  | (89 | )
Income tax expense | (16 | ) |  | (204 | )
Other adjustments: | — |  |  |  |
Depreciation and other amortization associated with real estate operations | (28,252 | ) |  | (27,834 | )
Impairment (losses) recoveries | (1,857 | ) |  | 4,836 |
General, administrative and leasing expenses | (7,820 | ) |  | (9,569 | )
Business development expenses and land carry costs | (1,359 | ) |  | (1,576 | )
Interest expense on continuing operations | (22,307 | ) |  | (24,431 | )
NOI from discontinued operations | (3,851 | ) |  | (9,350 | )
Loss on early extinguishment of debt | (5,184 | ) |  | — |
Income from continuing operations | $ | 9,137 |  |  | $ | 12,685 |
Schedule of reconciliation of segment assets to total assets | The following table reconciles our segment assets to total assets (in thousands):
| March 31, 2013 |  | March 31, 2012
Segment assets | $ | 3,055,876 |  |  | $ | 3,007,147 |
Non-operating property assets | 490,083 |  |  | 638,856 |
Other assets | 139,140 |  |  | 151,365 |
Total assets | $ | 3,685,099 |  |  | $ | 3,797,368 |

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- Definition Tabular disclosure of all significant reconciling items in the reconciliation of total property operating expenses from reportable segments to the entity's consolidated property operating expenses. + References No definition available. + Details
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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 27, 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8906-108599 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8721-108599 + Details
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