Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

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-Publisher FASB
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Related Parties - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Apr. 30, 2016	Dec. 31, 2017	Dec. 31, 2016	Jun. 29, 2015
Related Party Transaction [Line Items]
Percentage of indirect ownership by principal stockholder	15.00%
Senior Term Loan Facility \| Diamond Family Investments L P \| Loan Agreement
Related Party Transaction [Line Items]
Term loan borrowed				$ 30,000
Treasury And Custodial Services Agreements
Related Party Transaction [Line Items]
Fees for related party services		$ 167	$ 112