ACQUISITIONS - Bureau of Internet Accessibility Inc - Tangible and intangible assets acquired and liabilities assumed (Details) - USD ($)		3 Months Ended
	Mar. 09, 2022	Mar. 31, 2022	Dec. 31, 2021
Assets purchased:
Goodwill		$ 4,314,000	$ 701,000
Consideration:
Transaction costs		198,000
Bureau of Internet Accessibility Inc
Assets purchased:
Cash	$ 398,000
Accounts receivable	452,000
Other assets	29,000
Goodwill	3,614,000
Total assets purchased	8,843,000
Liabilities assumed:
Accounts payable and accrued liabilities	13,000
Deferred revenue	1,047,000
Total liabilities assumed	1,060,000
Net assets acquired	7,783,000
Consideration:
Cash paid	5,132,000
Contingent consideration liability	2,651,000
Total consideration	7,783,000
Transaction costs		$ 198,000
Bureau of Internet Accessibility Inc | Customer Relationships
Assets purchased:
Intangible assets	3,600,000
Bureau of Internet Accessibility Inc | Internally-developed software
Assets purchased:
Intangible assets	700,000
Bureau of Internet Accessibility Inc | Trade name
Assets purchased:
Intangible assets	$ 50,000