Note 1 - Significant Accounting Policies - Disaggregated Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		18 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023
Revenue	$ 14,537	$ 6,421	$ 21,111	$ 11,613	$ 11,613
Facilities Segment [Member]
Revenue	1,564	3,598	3,800		5,677
Facilities Segment [Member] | Maintenance [Member]
Revenue	1,014	859	1,953		1,662
Facilities Segment [Member] | Equipment Sales [Member]
Revenue	320	316	382		370
Facilities Segment [Member] | Deployment and Other Services [Member]
Revenue	230	2,423	1,465		3,645
System Integration Services Segment [Member]
Revenue	12,973	2,823	17,311		5,936
System Integration Services Segment [Member] | Integration Services [Member]
Revenue	2,380	2,057	4,992		3,430
System Integration Services Segment [Member] | Procurement Services [Member]
Revenue	$ 10,593	$ 766	$ 12,319		$ 2,506