XML 72 R43.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Equity - COPLP and Subsidiaries (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2016
Class of Stock [Line Items] |
Schedule of additional information pertaining to preferred shares | The table below sets forth additional information pertaining to COPT’s outstanding preferred shares (dollars in thousands, except per share data):
Series |  | # of Shares Issued |  | Aggregate Liquidation Preference |  | Month of Issuance |  | Annual Dividend Yield |  | Annual Dividend Per Share |  | Earliest Redemption Date |
Series K |  | 531,667 |  |  | $ | 26,583 |  |  | January 2007 |  | 5.600 | % |  | $ | 2.80000 |  |  | 1/9/2017 | (1)
Series L |  | 6,900,000 |  |  | 172,500 |  |  | June 2012 |  | 7.375 | % |  | $ | 1.84375 |  |  | 6/27/2017 |
|  | 7,431,667 |  |  | $ | 199,083 |  |  |  |  |  |  |  |  |  |
(1) As discussed below, COPT redeemed all of its Series K Preferred Shares effective on January 21, 2017.
Corporate Office Properties, L.P. [Member] |
Class of Stock [Line Items] |
Schedule of additional information pertaining to preferred shares | The table below sets forth information pertaining to preferred units in COPLP held by COPT as of December 31, 2016 (dollars in thousands, except per unit data):
Series |  | # of Units Issued |  | Aggregate Liquidation Preference |  | Month of Issuance |  | Annual Distribution Yield |  | Annual Distribution Per Unit |  | Earliest Redemption Date |
Series K |  | 531,667 |  |  | $ | 26,583 |  |  | January 2007 |  | 5.600 | % |  | $ | 2.80000 |  |  | 1/9/2017 | (1)
Series L |  | 6,900,000 |  |  | 172,500 |  |  | June 2012 |  | 7.375 | % |  | $ | 1.84375 |  |  | 6/27/2017 |
|  | 7,431,667 |  |  | $ | 199,083 |  |  |  |  |  |  |  |  |  |
(1) | As discussed further in Note 13, COPT redeemed all of its Series K Cumulative Redeemable Preferred Shares effective on January 21, 2017. Concurrently with this redemption, COPLP redeemed its Series K Preferred Units on the same terms. Since notification of this redemption occurred in December 2016, we present the liquidation preference of the related units as a liability on our consolidated balance sheet as of December 31, 2016; we also recognized a $17,000 decrease to net income available to common unitholders in 2016 pertaining to the units’ original issuance costs incurred. The liability associated with these units is classified in Level 2 of the fair value hierarchy.

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ClassOfStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of an entity's stock, including par or stated value per share, number and dollar amount of share subscriptions, shares authorized, shares issued, shares outstanding, number and dollar amount of shares held in an employee trust, dividend per share, total dividends, share conversion features, par value plus additional paid in capital, the value of treasury stock and other information necessary to a fair presentation, and EPS information. Stock by class includes common, convertible, and preferred stocks which are not redeemable or redeemable solely at the option of the issuer. Includes preferred stock with redemption features that are solely within the control of the issuer and mandatorily redeemable stock if redemption is required to occur only upon liquidation or termination of the reporting entity. If more than one issue is outstanding, state the title of each issue and the corresponding dollar amount; dollar amount of any shares subscribed but unissued and the deduction of subscriptions receivable there from; number of shares authorized, issued, and outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=65877616&loc=d3e177068-122764 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(d)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 4: 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(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -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=27012166&loc=d3e187085-122770 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21553-112644 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 8: 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(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65888546&loc=d3e21300-112643 Reference 10: 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(27)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21538-112644 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644 + Details
Name: | us-gaap_ScheduleOfStockByClassTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=us-gaap_SubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |