Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Allowance for doubtful accounts	$ 2	$ 4
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	50,000,000	50,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	750,000,000	60,000,000
Common stock, shares issued (in shares)	457,575,631	18,947,536
Common stock, shares outstanding (in shares)	457,575,631	18,947,536
Convertible Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	0	43,502,124
Preferred stock, shares issued (in shares)	0	110,500,514
Preferred stock, shares outstanding (in shares)	0	110,500,514
Convertible Debt [Member]
Convertible shareholder notes, debt discount		$ 1,528