Note 3 - Net Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

				Weighted-Average
				Shares
	Net Loss			Outstanding		Per Share
	(Numerator)			(Denominator)		Amount
Three months ended March 31, 2020
Basic and diluted	$	(16,801	)		86,582	$	(0.19	)
Three months ended March 31, 2019
Basic and diluted	$	(18,735	)		84,542	$	(0.22	)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	Three Months Ended March 31,
	2020		2019
Stock options		6,597		6,522
Contingent consideration liability (1)		947		2,565
Total securities excluded		7,544		9,087