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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified | 9 Months Ended
--- | ---
Sep. 30, 2013 | Sep. 30, 2012
Cash flows from operating activities |  |
Revenues from real estate operations received | $ 359,431 | $ 363,877
Construction contract and other service revenues received | 48,877 | 58,637
Property operating expenses paid | (133,799) | (133,375)
Construction contract and other service expenses paid | (53,191) | (50,438)
General, administrative, leasing, business development and land carry costs paid | (20,681) | (18,526)
Interest expense paid | (59,052) | (63,811)
Previously accreted interest expense paid | (11,116) | 0
Settlement of interest rate derivatives | 0 | (29,738)
Proceeds from sale of trading marketable securities | 298 | 18,975
Exit costs on property dispositions | (186) | (4,066)
Payments in connection with early extinguishment of debt | (23,969) | (2,637)
Interest and other income received | 391 | 786
Income taxes paid | 6 | (8)
Net cash provided by operating activities | 107,009 | 139,676
Cash flows from investing activities |  |
Construction, development and redevelopment | (156,820) | (107,621)
Tenant improvements on operating properties | (15,868) | (20,924)
Other capital improvements on operating properties | (17,528) | (9,571)
Acquisitions of operating properties | 0 | (48,308)
Proceeds from dispositions of properties | 12,447 | 290,607
Mortgage and other loan receivables funded or acquired | (4,111) | (11,603)
Leasing costs paid | (9,366) | (7,289)
Other | 4,401 | (1,527)
Net cash (used in) provided by investing activities | (186,845) | 83,764
Proceeds from debt |  |
Revolving Credit Facility | 457,000 | 262,000
Unsecured senior notes | 592,413 | 0
Other debt proceeds | 82,886 | 399,296
Repayments of debt |  |
Revolving Credit Facility | (457,000) | (844,000)
Scheduled principal amortization | (7,229) | (9,094)
Other debt repayments | (542,532) | (51,850)
Deferred financing costs paid | (9,001) | (3,210)
Net proceeds from issuance of preferred shares/units | 0 | 165,662
Net proceeds from issuance of common shares/units | 157,307 | 661
Redemption of preferred shares/units | (84,750) | (55,000)
Common share/unit dividends/distributions paid | (69,451) | (69,325)
Preferred share/unit dividends/distributions paid | (16,845) | (12,345)
Distributions paid to noncontrolling interests in COPLP | (3,705) | (4,510)
Restricted share redemptions | (1,848) | (3,279)
Other | (685) | 1,004
Net cash provided by (used in) financing activities | 96,560 | (223,990)
Net increase (decrease) in cash and cash equivalents | 16,724 | (550)
Cash and cash equivalents |  |
Beginning of period | 10,594 | 5,559
End of period | 27,318 | 5,009
Reconciliation of net income to net cash provided by operating activities: |  |
Net income | 8,872 | 1,331
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and other amortization | 87,956 | 95,248
Impairment losses | 30,940 | 60,593
Settlement of previously accreted interest expense | (11,116) | 0
Amortization of deferred financing costs | 4,292 | 4,696
Increase in deferred rent receivable | (7,995) | (7,939)
Amortization of net debt discounts | 1,207 | 2,357
Gain on sales of real estate | (2,683) | (20,969)
Share-based compensation | 4,869 | 8,262
Loss (gain) on early extinguishment of debt | 3,059 | (3,436)
Other | (2,284) | (459)
Changes in operating assets and liabilities: |  |
Decrease in accounts receivable | 1,523 | 10,063
Decrease in restricted cash and marketable securities | 418 | 15,051
(Increase) decrease in prepaid expenses and other assets | (12,974) | 1,532
(Decrease) increase in accounts payable, accrued expenses and other liabilities | 18 | 4,124
Increase (decrease) in rents received in advance and security deposits | 907 | (2,775)
Decrease in interest rate derivatives in connection with cash settlement | 0 | (28,003)
Net cash provided by operating activities | 107,009 | 139,676
Supplemental schedule of non-cash investing and financing activities: |  |
Decrease in accrued capital improvements, leasing and other investing activity costs | (13,094) | (11,627)
Decrease in property in connection with surrender of property in settlement of debt | 0 | 12,812
Decrease in debt in connection with surrender of property in settlement of debt | 0 | 16,304
Increase (decrease) in fair value of derivatives applied to accumulated other comprehensive income (loss) and noncontrolling interests | 7,785 | (4,398)
Equity in other comprehensive income of an equity method investee | 1,070 | 0
Dividends/distributions payable | 29,077 | 26,954
COPLP common units issued to acquire property and noncontrolling interest in other consolidated entity | 5,194 | 0
Decrease in noncontrolling interests and increase in shareholders’ equity in connection with the conversion of common units into common shares | 3,991 | 1,188
Adjustments to noncontrolling interests resulting from changes in COPLP ownership | 773 | 373
Increase in redeemable noncontrolling interest and decrease in shareholders’ equity to carry redeemable noncontrolling interest at fair value | 6,414 | 2,827
Corporate Office Properties, L.P. |  |
Cash flows from operating activities |  |
Revenues from real estate operations received | 359,431 | 363,877
Construction contract and other service revenues received | 48,877 | 58,637
Property operating expenses paid | (133,799) | (133,375)
Construction contract and other service expenses paid | (53,191) | (50,438)
General, administrative, leasing, business development and land carry costs paid | (20,681) | (18,526)
Interest expense paid | (59,052) | (63,811)
Previously accreted interest expense paid | (11,116) | 0
Settlement of interest rate derivatives | 0 | (29,738)
Proceeds from sale of trading marketable securities | 298 | 18,975
Exit costs on property dispositions | (186) | (4,066)
Payments in connection with early extinguishment of debt | (23,969) | (2,637)
Interest and other income received | 391 | 786
Income taxes paid | 6 | (8)
Net cash provided by operating activities | 107,009 | 139,676
Cash flows from investing activities |  |
Construction, development and redevelopment | (156,820) | (107,621)
Tenant improvements on operating properties | (15,868) | (20,924)
Other capital improvements on operating properties | (17,528) | (9,571)
Acquisitions of operating properties | 0 | (48,308)
Proceeds from dispositions of properties | 12,447 | 290,607
Mortgage and other loan receivables funded or acquired | (4,111) | (11,603)
Leasing costs paid | (9,366) | (7,289)
Other | 4,401 | (1,527)
Net cash (used in) provided by investing activities | (186,845) | 83,764
Proceeds from debt |  |
Revolving Credit Facility | 457,000 | 262,000
Unsecured senior notes | 592,413 | 0
Other debt proceeds | 82,886 | 399,296
Repayments of debt |  |
Revolving Credit Facility | (457,000) | (844,000)
Scheduled principal amortization | (7,229) | (9,094)
Other debt repayments | (542,532) | (51,850)
Deferred financing costs paid | (9,001) | (3,210)
Net proceeds from issuance of preferred shares/units | 0 | 165,662
Net proceeds from issuance of common shares/units | 157,307 | 661
Redemption of preferred shares/units | (84,750) | (55,000)
Common share/unit dividends/distributions paid | (72,661) | (73,340)
Preferred share/unit dividends/distributions paid | (17,340) | (12,840)
Restricted share redemptions | (1,848) | (3,279)
Other | (685) | 1,004
Net cash provided by (used in) financing activities | 96,560 | (223,990)
Net increase (decrease) in cash and cash equivalents | 16,724 | (550)
Cash and cash equivalents |  |
Beginning of period | 10,594 | 5,559
End of period | 27,318 | 5,009
Reconciliation of net income to net cash provided by operating activities: |  |
Net income | 8,872 | 1,331
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and other amortization | 87,956 | 95,248
Impairment losses | 30,940 | 60,593
Settlement of previously accreted interest expense | (11,116) | 0
Amortization of deferred financing costs | 4,292 | 4,696
Increase in deferred rent receivable | (7,995) | (7,939)
Amortization of net debt discounts | 1,207 | 2,357
Gain on sales of real estate | (2,683) | (20,969)
Share-based compensation | 4,869 | 8,262
Loss (gain) on early extinguishment of debt | 3,059 | (3,436)
Other | (2,284) | (459)
Changes in operating assets and liabilities: |  |
Decrease in accounts receivable | 1,523 | 10,063
Decrease in restricted cash and marketable securities | 822 | 14,399
(Increase) decrease in prepaid expenses and other assets | (12,974) | 1,532
(Decrease) increase in accounts payable, accrued expenses and other liabilities | (386) | 4,776
Increase (decrease) in rents received in advance and security deposits | 907 | (2,775)
Decrease in interest rate derivatives in connection with cash settlement | 0 | (28,003)
Net cash provided by operating activities | 107,009 | 139,676
Supplemental schedule of non-cash investing and financing activities: |  |
Decrease in accrued capital improvements, leasing and other investing activity costs | (13,094) | (11,627)
Decrease in property in connection with surrender of property in settlement of debt | 0 | 12,812
Decrease in debt in connection with surrender of property in settlement of debt | 0 | 16,304
Increase (decrease) in fair value of derivatives applied to accumulated other comprehensive income (loss) and noncontrolling interests | 7,785 | (4,398)
Equity in other comprehensive income of an equity method investee | 1,070 | 0
Dividends/distributions payable | 29,077 | 26,954
COPLP common units issued to acquire property and noncontrolling interest in other consolidated entity | 5,194 | 0
Increase in redeemable noncontrolling interest and decrease in shareholders’ equity to carry redeemable noncontrolling interest at fair value | $ 6,414 | $ 2,827

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- Definition Impairment losses measured as the amount by which the carrying amount of the business or real estate partnerships exceeds the fair value of the business or partnership. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2921-110230 + Details
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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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- Definition The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition The amount of cash paid for interest during the period net of cash paid for interest that is capitalized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586 + Details
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- Definition Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3574-108585 + Details
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- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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- Definition Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669646-108580 + Details
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- Definition The cash outflow for acquisition of or capital improvements to properties held for investment (operating, managed, leased) or for use. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition Amount of cash outflow in the form of ordinary dividends to preferred shareholders of the parent entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition The cash outflow for loan and debt issuance costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition The cash outflow from the acquisition of property as primarily intended to generate income for its owner. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The cash outflow to acquire an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among myriad other features and characteristics. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition Payments to develop real estate assets is the process of adding improvements on or to a parcel of land. Such improvements may include drainage, utilities, subdividing, access, buildings, and any combination of these elements; and are generally classified as cash flow from investing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The cash inflow from other long-term borrowings not otherwise defined in the taxonomy (with maturities initially due beyond one year or the normal operating cycle of the entity, if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition Amount of cash inflow (outflow) from sales and purchases of trading securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26853-111562 + Details
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- Definition The cash outflow attributable to repayments of borrowings not otherwise defined in the taxonomy (with maturities initially due after one year or beyond the operating cycle if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition Difference between actual rental income due and rental income recognized on a straight-line basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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