Note 8 - Accrued Liabilities - Accrued Liabilities (Details) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Payroll expenses	$ 243,000	$ 556,000
Bonuses payable	469,000	904,000
	$ 712,000	$ 1,460,000	[1]

[1] The condensed consolidated balance sheet as of December 31, 2016 has been prepared using information from the audited consolidated balance sheet as of that date.