Note 6 - LEASES - Other (Details) $ in Thousands	Sep. 30, 2021 USD ($) lease	Dec. 31, 2020 USD ($) lease
Note To Financial Statement Details Textual
Number of finance leases \| lease	0	0
Operating Lease, Liability, Amount Related to Extension of Lease Term	$ 1,100
Operating Lease, Liability, Current	$ 1,740	$ 1,926

Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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=123391704&loc=SL77918627-209977

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