Note 4 - Acquisitions - Preliminary Purchase Consideration (Details) - USD ($) $ in Thousands		6 Months Ended
	Jan. 01, 2020	Jun. 30, 2020	Dec. 31, 2019
Goodwill, Ending Balance		$ 116,270	$ 109,818
Cedar Holdings Group, Incorporated [Member]
Cash Consideration, including working capital adjustment		8,836
Share-based payment	$ 2,000	2,000
Fair value of contingent payments		3,072
Total estimated purchase price	$ 13,900	13,908
Cash and Cash Equivalents		66
Accounts Receivables, net		47
Other current assets		22
Property and equipment		4,661
Right of use operating lease		18
Intangible assets, consisting of customer relationships and network rights		5,390
Total identifiable assets		10,204
Accounts payable and accrued liabilities		(362)
Deferred tax liability		(2,373)
Operating lease liability		(13)
Total liabilities assumed		(2,748)
Total net assets (liabilities) assumed		7,456
Goodwill, Ending Balance		$ 6,452