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Derivatives | 12 Months Ended
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Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Derivatives | Derivatives We enter into short-duration foreign currency forward derivative contracts to reduce the risk of foreign currency fluctuations. We use these instruments to mitigate our exposure to non-local currency operating working capital. We record these contracts at fair value on our consolidated balance sheets. Although the derivative contracts will serve as an economic hedge of the cash flow of our currency exchange risk exposure, they are not formally designated as hedge contracts for hedge accounting treatment. Accordingly, any changes in the fair value of the derivative instruments during a period will be included in our consolidated statements of operations. As of December 31, 2017 and 2016, we had the following foreign currency derivative contracts outstanding in U.S. dollars (in thousands):
|  | December 31, 2017
|  | Notional |  | Contractual |  | Settlement
Derivative Contracts |  | Amount |  | Exchange Rate |  | 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
|  | December 31, 2016
|  | Notional |  | Contractual |  | Settlement
Derivative Contracts |  | Amount |  | Exchange Rate |  | Date
Canadian dollar |  | $ | 4,553 |  |  | 1.3179 |  | 3/14/2017
Euro |  | 4,753 |  |  | 1.0563 |  | 3/14/2017
Euro |  | 2,558 |  |  | 1.0659 |  | 1/13/2017
Norwegian krone |  | 3,643 |  |  | 8.5101 |  | 3/14/2017
Pound sterling |  | 3,908 |  |  | 1.2607 |  | 3/14/2017
The following table summarizes the location and fair value amounts of all derivative contracts in the consolidated balance sheets as of December 31, 2017 and 2016 (in thousands):
Derivatives not designated as Hedging Instruments |  | Consolidated Balance Sheet Location |  | December 31, 2017 |  | December 31, 2016
Foreign currency contracts |  | Accounts receivable, net |  | $ | — |  |  | $ | 146 |
Foreign currency contracts |  | Accrued and other current liabilities |  | (487 | ) |  | — |
The following table summarize the location and amounts of the unrealized and realized gains and losses on derivative contracts in the consolidated statements of operations as of December 31, 2017, 2016 and 2015 (in thousands):
Derivatives not designated as Hedging Instruments |  | Location of gain (loss) recognized in income on derivative contracts |  | December 31, 2017 |  | December 31, 2016 |  | December 31, 2015
Unrealized gain (loss) on foreign currency contracts |  | Other income, net |  | $ | (634 | ) |  | $ | (64 | ) |  | $ | 210 |
Realized loss on foreign currency contracts |  | Other income, net |  | (1,699 | ) |  | (296 | ) |  | — |
Total net gain (loss) on foreign currency contracts |  |  |  | $ | (2,333 | ) |  | $ | (360 | ) |  | $ | 210 |
Our derivative transactions are governed through International Swaps and Derivatives Association master agreements. These agreements include stipulations regarding the right of offset in the event that we or our counterparty default on our performance obligations. If a default were to occur, both parties have the right to net amounts payable and receivable into a single net settlement between parties. Our accounting policy is to offset derivative assets and liabilities executed with the same counterparty when a master netting arrangement exists. The following table presents the gross and net fair values of our derivatives as of December 31, 2017 and 2016 (in thousands):
|  | Derivative Asset Positions |  | Derivative Liability Positions
|  | December 31, |  | December 31,
|  | 2017 |  | 2016 |  | 2017 |  | 2016
Gross position - asset / (liability) |  | $ | — |  |  | $ | 181 |  |  | $ | (487 | ) |  | $ | (35 | )
Netting adjustment |  | — |  |  | (35 | ) |  | — |  |  | 35 |
Net position - asset / (liability) |  | $ | — |  |  | $ | 146 |  |  | $ | (487 | ) |  | $ | — |

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- Definition The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -URI http://asc.fasb.org/topic&trid=2229140 + Details
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