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Derivatives (Tables) | 9 Months Ended
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Sep. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Schedule of Foreign Currency Derivative Contracts Outstanding | As of September 30, 2018 and December 31, 2017, we had the following foreign currency derivative contracts outstanding in U.S. dollars (in thousands):
|  | September 30, 2018
Derivative Contracts |  | Notional Amount |  | Contractual Exchange Rate |  | Settlement Date
Canadian dollar |  | $ | 4,307 |  |  | 1.3003 |  | 12/17/2018
Euro |  | 5,046 |  |  | 1.1734 |  | 12/17/2018
Norwegian krone |  | 6,207 |  |  | 8.2171 |  | 12/17/2018
Pound sterling |  | 13,136 |  |  | 1.3136 |  | 12/17/2018
|  | December 31, 2017
Derivative Contracts |  | Notional Amount |  | Contractual Exchange Rate |  | Settlement Date
Canadian dollar |  | $ | 6,226 |  |  | 1.2850 |  | 3/15/2018
Euro |  | 5,326 |  |  | 1.1836 |  | 3/15/2018
Norwegian krone |  | 6,212 |  |  | 8.3704 |  | 3/15/2018
Pound sterling |  | 6,039 |  |  | 1.3419 |  | 3/15/2018
Impact of Derivatives Contracts on Condensed Consolidated Balance Sheets | The following table summarizes the location and fair value amounts of all derivative contracts in the condensed consolidated balance sheets as of September 30, 2018 and December 31, 2017 (in thousands):
Derivatives not Designated as Hedging Instruments |  | Consolidated Balance Sheet Location |  | September 30, 2018 |  | December 31, 2017
Foreign currency contracts |  | Accounts payable and accrued liabilities |  | $ | (45 | ) |  | $ | (487 | )
Impact of Derivatives Contracts on Condensed Consolidated Statements of Operations | The following table summarizes the location and amounts of the realized and unrealized gains and losses on derivative contracts in the condensed consolidated statements of operations (in thousands):
|  |  |  | Three Months Ended |  | Nine Months Ended
|  |  |  | September 30, |  | September 30,
Derivatives not Designated as Hedging Instruments |  | Location of Gain (Loss) Recognized in Income on Derivative Contracts |  | 2018 |  | 2017 |  | 2018 |  | 2017
Unrealized gain (loss) on foreign currency contracts |  | Other income (expense), net |  | $ | (323 | ) |  | $ | 681 |  |  | $ | 442 |  |  | $ | (49 | )
Realized gain (loss) on foreign currency contracts |  | Other income (expense), net |  | 447 |  |  | (1,794 | ) |  | 572 |  |  | (2,346 | )
Total net gain (loss) on foreign currency contracts |  |  |  | $ | 124 |  |  | $ | (1,113 | ) |  | $ | 1,014 |  |  | $ | (2,395 | )
Schedule of Derivative Assets, Gross and Net Fair Values | The following table presents the gross and net fair values of our derivatives at September 30, 2018 and December 31, 2017 (in thousands):
|  | Derivative Asset Positions |  | Derivative Liability Positions
|  | September 30, 2018 |  | December 31, 2017 |  | September 30, 2018 |  | December 31, 2017
Gross position - asset / (liability) |  | $ | 64 |  |  | $ | — |  |  | $ | (109 | ) |  | $ | (487 | )
Netting adjustment |  | (64 | ) |  | — |  |  | 64 |  |  | — |
Net position - asset / (liability) |  | $ | — |  |  | $ | — |  |  | $ | (45 | ) |  | $ | (487 | )
Schedule of Derivative Liabilities, Gross and Net Fair Values | The following table presents the gross and net fair values of our derivatives at September 30, 2018 and December 31, 2017 (in thousands):
|  | Derivative Asset Positions |  | Derivative Liability Positions
|  | September 30, 2018 |  | December 31, 2017 |  | September 30, 2018 |  | December 31, 2017
Gross position - asset / (liability) |  | $ | 64 |  |  | $ | — |  |  | $ | (109 | ) |  | $ | (487 | )
Netting adjustment |  | (64 | ) |  | — |  |  | 64 |  |  | — |
Net position - asset / (liability) |  | $ | — |  |  | $ | — |  |  | $ | (45 | ) |  | $ | (487 | )

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