Note 12 - Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block]

(in thousands)
March 31, 2019	Level 1		Level 2		Level 3		Total
Money market securities	$	16	$	—	$	—	$	16
Certificates of deposit - restricted cash		523		—		—		523
Certificate of deposit - restricted investment (1)		400		—		—		400
Total assets	$	939	$	—	$	—	$	939

December 31, 2018	Level 1		Level 2		Level 3		Total
Money market securities	$	16	$	—	$	—	$	16
Certificates of deposit - restricted cash		523		—		—		523
Certificate of deposit - restricted investment (1)		400		—		—		400
Convertible notes receivable		—		—		655		655
Total assets	$	939	$	—	$	655	$	1,594

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

Changes in Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
	Convertible
(in thousands)	Note
Balance at December 31, 2018	$	655
Conversion to common stock of VPS		(655	)
Balance at March 31, 2019	$	—