Note 2 - Fair Value Measurement (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

As of March 31, 20 20	Level 1		Level 2		Level 3		Total
Assets:
Money market accounts	$	6,400	$	—	$	—	$	6,400
Convertible debt held at fair value		—		—		1,000		1,000
Total		6,400		—		1,000		7,400
Liabilities:
Contingent consideration - business combinations		—		—		1,851		1,851
Warrant liability		—		—		17,667		17,667
Total	$	—	$	—	$	19,518	$	19,518

As of December 31, 2019	Level 1		Level 2		Level 3		Total
Assets:
Money market accounts	$	6,448	$	—	$	—	$	6,448
Convertible debt held at fair value		—		—		1,000		1,000
Total		6,448		—		1,000		7,448
Liabilities:
Contingent consideration - business combinations		—		—		1,914		1,914
Warrant liability		—		—		39,602		39,602
Total	$	—	$	—	$	41,516	$	41,516

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

	March 31,		December 31,
(In thousands)	2020		2019
Beginning balance	$	1,000	$	1,000
Purchases		—		—
Change in fair value recognized in net income		—		—
Total	$	1,000	$	1,000

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

	March 31,			December 31,
(In thousands)	2020			2019
Beginning balance	$	1,914		$	—
Additions		—			2,347
Change in fair value recognized in net income		(63	)		50
Payments earned, reclassified to accrued liabilities		—			(483	)
Total	$	1,851		$	1,914

Warrant Liabilities [Member]

Notes Tables

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

	March 31,			December 31,
(In thousands)	2020			2019
Beginning balance	$	39,602		$	28,516
Exercised warrants		(21	)		(1,749	)
Change in fair value recognized in net income		(21,914	)		12,835
Ending balance	$	17,667		$	39,602