Note 17 - Shareholders' Equity (Details Textual) - $ / shares	Jun. 30, 2018	Dec. 31, 2017
Shareholders Equity [Line Items]
Stock Authorized	560,000,000
Common Stock, Shares Authorized	500,000,000
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	60,000,000
Preferred Stock, No Par Value	$ 0	$ 0
Common Stock, Shares, Outstanding	42,700,000	42,600,000
Treasury Stock, Shares	600,000	600,000
Series A Preferred Stock [Member]
Shareholders Equity [Line Items]
Preferred Stock, Shares Outstanding	2,000,000	2,000,000
Preferred Stock, Shares Issued	2,000,000	2,000,000