Note 1 - Business and Basis of Presentation (Tables)

9 Months Ended

Sep. 30, 2018

Notes Tables

Schedule of Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Table Text Block]

(in thousands)	September 30, 201 8		December 31, 201 7
Cash and cash equivalents	$	70,156	$	90,332
Restricted cash, non-current		200		200
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows	$	70,356	$	90,532