Supplemental Disclosure Of Cash Flows (Tables)

12 Months Ended

Dec. 31, 2020

Supplemental Disclosure Of Cash Flows [Abstract]

Supplemental Disclosures Of Cash Flow Information

	Year Ended December 31,
		2020		2019		2018
Interest received	$	425	$	1,069	$	381
Interest paid		77		72		680
Income taxes received		40		73		-
Income taxes paid		107		148		190
	Year Ended December 31,
Noncash Investing and Financing Transactions:		2020		2019		2018
Acquisition of a business through contingent consideration liabilities incurred		3,705		-		-
Acquisition of a business through issuance of common stock		982		-		-
Investment in partnerships		442		-		-
Self-fitting software acquired through liabilities incurred and exchange of investment in partnership		-		3,093		-
Technology access liability		-		-		(375)