Segment Information - Additional Information (Detail) - USD ($) $ in Millions |
12 Months Ended | ||||
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Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Sep. 30, 2017 |
Sep. 30, 2016 |
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Segment Reporting Information [Line Items] | |||||
Accounts Receivable, Net | $ 5.2 | $ 5.4 | |||
Customer Concentration Risk [Member] | Sales Revenue, Net [Member] | |||||
Segment Reporting Information [Line Items] | |||||
Concentration Risk, Percentage | 100.00% | ||||
Customer One [Member] | |||||
Segment Reporting Information [Line Items] | |||||
Sales Revenue, Goods, Gross | $ 10.8 | $ 1.9 | |||
Accounts Receivable, Net | 1.9 | 1.1 | |||
Customer Two [Member] | |||||
Segment Reporting Information [Line Items] | |||||
Sales Revenue, Goods, Gross | 7.7 | 1.1 | |||
Accounts Receivable, Net | 1.5 | 0.5 | |||
Customer Three [Member] | |||||
Segment Reporting Information [Line Items] | |||||
Sales Revenue, Goods, Gross | 5.4 | $ 0.7 | |||
Accounts Receivable, Net | $ 0.9 |
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- Definition For an unclassified balance sheet, the amount due from customers or clients for goods or services that have been delivered or sold in the normal course of business, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Aggregate revenue during the period from sale of goods in the normal course of business, before deducting returns, allowances and discounts. 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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