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Information by Business Segment (Details 4) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018 | Mar. 31, 2018
--- | --- | --- | ---
Reconciliation of segment assets to total assets |  |  |
Total COPT consolidated assets | $ 3,775,859 | $ 3,656,005 | $ 3,596,238
Operating properties lease liabilities included in segment assets | 16,619 |  |
Segment assets |  |  |
Reconciliation of segment assets to total assets |  |  |
Total COPT consolidated assets | 3,108,153 |  | 3,025,966
Operating properties lease liabilities included in segment assets | 16,342 |  | 0
Non-operating property assets |  |  |
Reconciliation of segment assets to total assets |  |  |
Total COPT consolidated assets | 485,911 |  | 425,951
Other assets |  |  |
Reconciliation of segment assets to total assets |  |  |
Total COPT consolidated assets | $ 165,453 |  | $ 144,321

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