Note 3 - Business Combinations - Fair Value of Net Assets Acquired (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Feb. 03, 2020	Jan. 24, 2020
Goodwill	$ 8,045	$ 8,413
Parcus Medical [Member]
Cash and cash equivalents				$ 196
Accounts receivable				2,029
Inventories				10,968
Prepaid expenses and other current assets				364
Property and equipment, net				1,099
Right-of-use assets				944
Intangible assets				44,000
Accounts payable, accrued expenses and other current liabilities				(2,763)
Other long-term liabilities				(594)
Lease liabilities				(735)
Net assets acquired				55,508
Goodwill				19,628
Estimated total purchase consideration				$ 75,136
Arthrosurface [Member]
Cash and cash equivalents			$ 1,072
Accounts receivable			5,368
Inventories			15,652
Prepaid expenses and other current assets			535
Property and equipment, net			3,394
Intangible assets			48,900
Accounts payable, accrued expenses and other current liabilities			(3,929)
Net assets acquired			67,393
Goodwill			22,892
Estimated total purchase consideration			90,285
Other long-term assets			7,548
Deferred tax liabilities			$ (11,147)