Note 7 - Deerfield Loan (Tables)

9 Months Ended

Sep. 30, 2016

Notes Tables

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

	September 30,		December 31,
(in thousands)	2016		2015
Note payable	$	25,000	$	25,000

Schedule of Debt Instrument Interest Expense [Table Text Block]

	Three Months Ended				Nine Months Ended
(in thousands)	September 30,				September 30,
	2016		2015		2016		2015
Amortization of prepaid interest expense	$	347	$	420	$	1,435	$	420
Cash interest expense		191		150		191		1,451
Non-cash amortization of debt discount		–		138		–		1,287
Debt discount write-off		–		707		–		707
Amortization of debt costs		–		2		–		12
Write-off of debt costs		–		66		–		66
Total interest expense	$	538	$	1,483	$	1,626	$	3,943