Note 7 - Long-term Debt (Tables)

6 Months Ended

Jun. 30, 2017

Notes Tables

Schedule of Long-term Debt Instruments [Table Text Block]

	June 30,		December 31,
(in thousands)	2017		2016
Current portion	$	12,500	$	-
Non-current portion		12,500		25,000
Total Deerfield Loan	$	25,000	$	25,000

Schedule of Debt Instrument Interest Expense [Table Text Block]

	Three Months Ended June 30,				Six Months Ended June 30,
(in thousands)	2017		2016		2017		2016
Amortization of prepaid interest expense	$	273	$	544	$	543	$	1,088
Cash interest expense		257		-		511		-
Total interest expense	$	530	$	544	$	1,054	$	1,088