Note 10 - Leases - Lease Modifications (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 21, 2021	Dec. 31, 2020
Total	$ 6,619
Operating Lease, Right-of-Use Asset	5,919		$ 6,387
Lease Agreement, EMS Facility in Fremont, California [Member]
Total	202		1,176
Operating Lease, Right-of-Use Asset	202		1,176
Lease Agreement, Facility for Videology [Member]
Total	252
Operating Lease, Right-of-Use Asset	252
Lease Agreement, EMS Facility in Mt. Laurel, New Jersey [Member]
Total			2,051
Operating Lease, Right-of-Use Asset			2,051
Automobile Lease for Videology [Member]
Total	54
Operating Lease, Right-of-Use Asset	54
Lease Agreement, Ambrell’s Netherlands Facility [Member]
Total			133
Operating Lease, Right-of-Use Asset			133
Facility Lease From Acquisition of Acculogic [Member]
Total	78	$ 78,000
Operating Lease, Right-of-Use Asset	76	$ 76,000
Automobile Leases [Member]
Total	54		91
Operating Lease, Right-of-Use Asset	$ 54		$ 91