Monthly rental expense incurred under the operating lease.

No definition available.

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- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

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- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980

+ Details

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- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

+ Details

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717

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Note 17 - Commitments and Contingencies (Details Textual)		1 Months Ended		12 Months Ended
	Nov. 06, 2018 USD ($) ft²	Jun. 30, 2018 USD ($)	Aug. 31, 2015 USD ($) ft²	Dec. 31, 2018 USD ($)	Dec. 31, 2019 USD ($)	Jul. 31, 2015 ft²	Mar. 01, 2013
Operating Lease, Right-of-Use Asset					$ 7,443,000
Operating Lease, Liability, Total					$ 8,694,000
Operating Leases, Rent Expense, Net, Total				$ 2,300,000
Office Space in Malborough, Massachusetts [Member]
Operating Leases, Monthly Rent Expense			$ 13,000
Lessee, Operating Lease, Term of Contract							5 years
Lessee, Operating Lease, Renewal Term			2 years
Area of Real Estate Property \| ft²			22,100			7,600
Norwood, Massachusetts [Member]
Operating Leases, Monthly Rent Expense	$ 17,000
Area of Real Estate Property \| ft²	9,000
Minimum [Member] \| UNITED KINGDOM
Operating Leases, Monthly Rent Expense		$ 39,000
Minimum [Member] \| Office Space in Malborough, Massachusetts [Member]
Operating Leases, Monthly Rent Expense			$ 38,000
Maximum [Member] \| UNITED KINGDOM
Operating Leases, Monthly Rent Expense		$ 79,000
Maximum [Member] \| Office Space in Malborough, Massachusetts [Member]
Operating Leases, Monthly Rent Expense			$ 39,000