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Subsequent Events - Additional Information (Details) - USD ($)				12 Months Ended
	Mar. 29, 2020	Dec. 31, 2018	May 29, 2015	Dec. 31, 2019	Dec. 31, 2018
Subsequent Event [Line Items]
Repayment of debt				$ 3,692,000	$ 0
Subsequent Event [Member]
Subsequent Event [Line Items]
License fee payment in cash	$ 400,000
License fee payment in common stock	$ 300,000
Term Loan [Member]
Subsequent Event [Line Items]
Debt principal repayment start date				May 01, 2020
Maturity date		Jun. 01, 2020	Jun. 01, 2019	Jun. 01, 2021
Term Loan [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Debt principal repayment start date	May 01, 2021
Repayment of debt	$ 5,000,000
Maturity date	Jun. 01, 2024

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- Definition

Debt principal repayment start date.

+ References

No definition available.

+ Details

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- Definition

Stock issued during period, value, license.

+ References

No definition available.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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- Definition

The amount of cash paid for royalties 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 (g)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3536-108585

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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