Note 1 - Description of Business (Details) - $ / shares		3 Months Ended
	Jan. 16, 2016	Mar. 31, 2018	Dec. 31, 2017
Disclosure Text Block [Abstract]
Stockholders' Equity, Reverse Stock Split	1 for 101
Capital Stock, Share Authorized		510,000,000
Common Stock, Shares Authorized		500,000,000	500,000,000
Common Stock, Par or Stated Value Per Share (in Dollars per share)		$ 0.01	$ 0.01
Preferred Stock, Shares Authorized		10,000,000	10,000,000
Preferred Stock, Par or Stated Value Per Share (in Dollars per share)		$ 0.01	$ 0.01