The following table summarizes the allocation of the purchase price to the assets acquired and liabilities assumed: | | | | | (in thousands) | October 11, 2016 | Fair value of assets acquired: | | Unproved properties | 1,138,423 |
| Proved properties | 444,551 |
| Other current assets | $ | 13,341 |
| Other property and equipment | 1,764 |
| Derivative instruments | 1,052 |
| Goodwill | — |
| Total amount attributable to assets acquired | 1,599,131 |
| Fair value of liabilities assumed: | | Accounts payable and accrued expenses | (30,156 | ) | Other current liabilities | (63 | ) | Derivative instruments | (3,400 | ) | Asset retirement obligation | (4,989 | ) | Total fair value of net assets acquired | $ | 1,560,523 |
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The table below summarizes the allocation of the $867.8 million adjusted purchase price, based on the acquisition date fair value of the assets acquired and the liabilities assumed as of December 31, 2018: | | | | | (in thousands) | Silverback Acquisition | Total purchase price consideration | $ | 867,772 |
| Fair value of assets acquired: | | Unproved properties | 753,763 |
| Proved properties | 116,700 |
| Other property and equipment | 56 |
| Total amount attributable to assets acquired | 870,519 |
| Fair value of liabilities assumed: | | Liabilities | (2,747 | ) | Total fair value of net assets acquired | $ | 867,772 |
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