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Share-Based Compensation and Other Compensation Matters (Tables) | 12 Months Ended
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Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Reporting for share-based compensation expense | The table below sets forth our reporting for share based compensation cost (in thousands):
|  | For the Years Ended December 31,
|  | 2016 |  | 2015 |  | 2014
General, administrative and leasing expenses |  | $ | 5,816 |  |  | $ | 5,574 |  |  | $ | 5,307 |
Property operating expenses |  | 1,027 |  |  | 1,000 |  |  | 857 |
Capitalized to development activities |  | 610 |  |  | 824 |  |  | 886 |
Share-based compensation cost |  | $ | 7,453 |  |  | $ | 7,398 |  |  | $ | 7,050 |
Summary of restricted share transactions under the entity's share-based compensation plans | The following table summarizes restricted shares under the share-based compensation plans for 2014, 2015 and 2016:
|  | Shares |  | Weighted Average Grant Date Fair Value
Unvested as of December 31, 2013 |  | 377,448 |  |  | $ | 26.96 |
Granted |  | 216,607 |  |  | 26.73 |
Forfeited |  | (21,335 | ) |  | 25.10 |
Vested |  | (182,213 | ) |  | 28.56 |
Unvested as of December 31, 2014 |  | 390,507 |  |  | 26.19 |
Granted |  | 201,024 |  |  | 28.69 |
Forfeited |  | (10,550 | ) |  | 26.05 |
Vested |  | (202,781 | ) |  | 26.07 |
Unvested as of December 31, 2015 |  | 378,200 |  |  | 27.58 |
Granted |  | 231,937 |  |  | 24.77 |
Forfeited |  | (22,907 | ) |  | 25.31 |
Vested |  | (215,983 | ) |  | 27.19 |
Unvested as of December 31, 2016 |  | 371,247 |  |  | $ | 26.20 |
Unvested shares as of December 31, 2016 that are expected to vest |  | 353,681 |  |  | $ | 26.20 |
Schedule of PSU's Granted | We made the following grants of PSUs to executives from 2011 through 2016 (dollars in thousands):
Grant Date |  | Number of PSUs Granted |  | Performance Period Commencement Date |  | Performance Period End Date |  | Grant Date Fair Value |  | Number of PSUs Outstanding as of December 31, 2016
3/3/2011 |  | 56,883 |  |  | 3/3/2011 |  | 3/2/2014 |  | $ | 2,796 |  |  | — |
3/1/2012 |  | 54,070 |  |  | 1/1/2012 |  | 12/31/2014 |  | 1,772 |  |  | — |
3/1/2013 |  | 69,579 |  |  | 1/1/2013 |  | 12/31/2015 |  | 1,867 |  |  | — |
3/6/2014 |  | 49,103 |  |  | 1/1/2014 |  | 12/31/2016 |  | 1,723 |  |  | 8,849 |
3/5/2015 |  | 45,656 |  |  | 1/1/2015 |  | 12/31/2017 |  | 1,678 |  |  | 15,767 |
3/1/2016 |  | 26,299 |  |  | 1/1/2016 |  | 12/31/2018 |  | 1,000 |  |  | 24,850 |
Schedule of payouts for defined performance under performance-based awards of share-based compensation | The number of PSUs earned (“earned PSUs”) at the end of the performance period will be determined based on the percentile rank of COPT’s total shareholder return relative to a peer group of companies, as set forth in the following schedule:
Percentile Rank |  | Earned PSUs Payout %
75th or greater |  | 200% of PSUs granted
50th or greater |  | 100% of PSUs granted
25th |  | 50% of PSUs granted
Below 25th |  | 0% of PSUs granted
Schedule of assumptions used in Monte Carlo models for PSUs | The grant date fair value and certain of the assumptions used in the Monte Carlo models for the PSUs granted in 2014, 2015 and 2016 are set forth below:
|  | For the Years Ended December 31,
|  | 2016 |  | 2015 |  | 2014
Grant date fair value |  | $ | 38.21 |  |  | $ | 36.76 |  |  | $ | 35.09 |
Baseline common share value |  | $ | 23.90 |  |  | $ | 29.28 |  |  | $ | 26.52 |
Expected volatility of common shares |  | 20.4 | % |  | 19.9 | % |  | 28.6 | %
Risk-free interest rate |  | 0.96 | % |  | 0.99 | % |  | 0.66 | %
Deferred share awards | We made the following grants of deferred share awards to nonemployee members of our Board of Trustees in 2015 and 2016 (dollars in thousands, except per share amounts):
Year of Grant |  | Number of Deferred Share Awards Granted |  | Aggregate Grant Date Fair Value |  | Grant Date Fair Value Per Share
2015 |  | 24,056 |  |  | $ | 642 |  |  | $ | 26.70 |
2016 |  | 24,944 |  |  | 671 |  |  | 26.89 |
Summary of stock option transactions under the entity's share-based compensation plans | The table below sets forth information regarding our outstanding options (dollars in thousands, except per share data):
|  | Options Outstanding and Exercisable |  | Weighted Average Exercise Price Per Share |  | Weighted Average Remaining Contractual Term (in Years) |  | Aggregate Intrinsic Value
December 31, 2013 |  | 640,927 |  |  | $38.11 |  | 2 |  | $ | 68 |
December 31, 2014 |  | 559,736 |  |  | $39.60 |  | 2 |  | $ | 167 |
December 31, 2015 |  | 425,347 |  |  | $42.75 |  | 1 |  | $ | — |
December 31, 2016 |  | 201,100 |  |  | $43.35 |  | 1 |  | $ | 31 |

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of performance share units, including, but not limited to: (a) Grant date fair value (b) baseline common share value (c) expected volatility of the entity's shares, and (d) risk-free rate(s). + References No definition available. + Details
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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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