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Related Party Transactions (Details) $ / shares in Units, CAD in Thousands |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
May. 06, 2013 $ / shares | May. 06, 2013 CAD d | Nov. 30, 2013 USD ($) | Nov. 30, 2013 CAD | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Jul. 31, 2014
Trapeze Media Limited | Union Advertising Canada LC |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Percentage of voting interests acquired |  |  |  |  |  |  |  | 100.00%
Former Chief Executive Officer [Member] | Services fees and incentive awards [Domain] |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Expenses from transactions with related party |  |  |  |  | $ 8,825,000 | $ 13,592,000 | $ 15,992,000 |
Former Chief Executive Officer [Member] | Special Bonus |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Expenses from transactions with related party |  | CAD 10,000 | $ 9,649,000 | CAD 10,000 |  |  |  |
Market price threshold, per share | $ / shares | $ 30 |  |  |  |  |  |  |
Market price threshold, minimum number of days | d |  | 20 |  |  |  |  |  |
Former Chief Executive Officer [Member] | Expense Reimbursement [Member] |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Related Party Transaction, Other Revenues from Transactions with Related Party |  |  |  |  | 1,877,000 |  |  |
Former Chief Executive Officer [Member] | Bonus Repayment [Domain] |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Related Party Transaction, Other Revenues from Transactions with Related Party |  |  |  |  | 10,582,000 |  |  |
Aircraft Management Company | Use of Aircraft |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Expenses from transactions with related party |  |  |  |  | 398,000 |  |  |
KBS President of Global Accounts [Member] | Total Compensation [Member] |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Expenses from transactions with related party |  |  |  |  | 943,000 |  |  |
Director of Operations, Attention Partners [Member] | Total Compensation [Member] |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Expenses from transactions with related party |  |  |  |  | 125,000 |  |  |
Peerage Realty Partners [Domain] |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Related Party Transaction, Other Revenues from Transactions with Related Party |  |  |  |  | $ 131 |  |  |

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