Amount of financing receivable that can be withdrawn, repaid and redrawn.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919232-210447

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 55
-Paragraph 79
-URI http://asc.fasb.org/extlink&oid=121647567&loc=SL82922352-210448

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
-Section S99
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-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

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Description of the terms of a credit facility arrangement. Terms typically include interest rate, collateral required, guarantees required, repayment requirements, and restrictions on use of assets and activities of the entity.

+ References

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- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

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- Definition

The effective interest rate during the reporting period.

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Line of Credit (Details Narrative) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
Line of Credit (Details Narrative) - USD ($) $ in Thousands	Nov. 30, 2018	Mar. 31, 2020	Dec. 31, 2019	Nov. 13, 2018
Line of credit		$ 1,200	$ 3,000
Line of credit outstanding accounts receivable		2,200
Silicon Valley Bank [Member]
Line of credit	$ 850
Line of credit outstanding accounts receivable		$ 2,550
Line of credit facility, description	The proceeds of the term loan are expected to be used for laboratory capital expenditures and will be repaid monthly. The balance of the Line of Credit is available for working capital purposes as a revolving line of credit and has a three-year term. The borrowing limit of the revolving line of credit is the lower of 80% of the Company's eligible accounts receivable (as adjusted by SVB) and the aggregate amount of cash collections with respect to accounts receivable during the three prior calendar months.	The amount that may be borrowed under the Revolving Line is the lower of (i) $3.75 million or (ii) 80% of the Company's eligible accounts receivable (as adjusted by SVB). Revolving Line outstanding amounts incur interest at a rate per annum equal to the Wall Street Journal Prime Rate plus 0.5%. The Company is also required to pay an unused Revolving Line facility fee monthly in arrears in an amount equal to 0.35% per annum of the average unused but available portion of the Revolving Line. The term loan portion of the SVB Loan Agreement has a maturity date of May 2, 2022, and the Revolving Line has a maturity date three years from the effective date, or November 13, 2021
Line of credit, percentage	0.50%
Revolving Line facility fee monthly in arrears, percentage		0.35%
Line of credit, maturity date		Nov. 13, 2021
Withdrawn of available funds		$ 1,200
Silicon Valley Bank [Member] \| Prime Rate [Member]
Line of credit, percentage	5.00%	0.50%
Loan and Security Agreement [Member] \| Silicon Valley Bank [Member]
Line of credit				$ 4,000
Line of credit outstanding accounts receivable				3,750
Loan and Security Agreement [Member] \| Silicon Valley Bank [Member] \| Term Loan [Member]
Line of credit				$ 850