Note 8 - Accrued Liabilities - Accrued Liabilities (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Bonuses payable	$ 696,000	$ 904,000
Payroll expenses	281,000	556,000
	$ 977,000	$ 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.