Transaction with Related Parties - Additional Information (Detail) - USD ($) $ in Millions |
1 Months Ended | 12 Months Ended | |
|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2017 |
Jul. 31, 2017 |
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| Houston | |||
| Related Party Transaction [Line Items] | |||
| Gain on related party payable extinguishment | $ 0.3 | ||
| Note receivable due from related party | $ 0.3 | ||
| Law Firm | |||
| Related Party Transaction [Line Items] | |||
| Legal fees | $ 0.7 |
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amounts due from parties associated with the reporting entity as evidenced by a written promise to pay, due after 1 year (or 1 business cycle). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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