One-time upfront license fee accounts receivable

No definition available.

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

Payments received in number of equal installments.

+ References

No definition available.

+ Details

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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.

+ References

No definition available.

+ Details

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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
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-Publisher FASB
-Name Accounting Standards Codification
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-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

+ Details

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Period Type:	duration

- Definition

Cash received from licensees for license fees during the current period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
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-Publisher FASB
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-Topic 606
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045

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Balance Type:	credit
Period Type:	duration

- Details

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- Details

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Data Type:	na
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- Details

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- Details

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- Details

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Trade Accounts Receivable and Allowance for Doubtful Accounts - Additional Information (Detail) $ in Thousands	3 Months Ended								4 Months Ended	12 Months Ended
	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Jan. 31, 2018 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($) Installment
Concentration Risk [Line Items]
Upfront license fee	$ 5,227	$ 4,914	$ 5,438	$ 5,613	$ 4,858	$ 8,677	$ 5,587	$ 6,091		$ 21,192	$ 25,213
Payments received in number of equal installments \| Installment											2
Payment received as license fees									$ 1,750
One-time upfront license fee remained in accounts receivable					1,750						$ 1,750
License [Member]
Concentration Risk [Line Items]
Upfront license fee	$ 596	$ 595	$ 658	$ 528	$ 509	4,385	$ 914	$ 950		$ 2,377	$ 6,758
License [Member] \| Verance Corporation [Member]
Concentration Risk [Line Items]
Upfront license fee						$ 3,500
Accounts Receivable [Member] \| Minimum [Member] \| Credit Concentration Risk [Member]
Concentration Risk [Line Items]
Percentage of trade accounts receivable of major customers										10.00%	10.00%