Note 7 - Accrued Expenses (Tables)

3 Months Ended

Mar. 31, 2017

Notes Tables

Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]

	March 31,		December 31,
	2017		2016
Loss contingency for litigation	$	4,000	$	4,000
Accrued legal and professional fees		1,003		1,123
Accrued consulting and clinical trial costs		5,487		6,933
Accrued payroll and related costs		1,015		1,957
Other		1,200		1,751
Accrued expenses	$	12,705	$	15,764