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Derivative Instruments - Impact of Netting Agreements and Margin Deposits (Details) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016
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Asset derivatives: |  |
Derivative instruments, recorded in the Condensed Consolidated Balance Sheet, gross | $ 59,391 | $ 33,053
Liability derivatives: |  |
Derivative instruments, recorded in the Condensed Consolidated Balance Sheet, gross | 136,462 | 257,943
Commodity derivatives |  |
Asset derivatives: |  |
Derivative instruments, recorded in the Condensed Consolidated Balance Sheet, gross | 59,391 | 33,053
Derivative instruments subject to master netting agreements | (45,200) | (23,373)
Margin deposits remitted to counterparties | 0 | 0
Derivative instruments, net | 14,191 | 9,680
Liability derivatives: |  |
Derivative instruments, recorded in the Condensed Consolidated Balance Sheet, gross | 136,462 | 257,943
Derivative instruments subject to master netting agreements | (45,200) | (23,373)
Margin deposits remitted to counterparties | 0 | 0
Derivative instruments, net | $ 91,262 | $ 234,570

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