Note 14 - Income (Loss) Per Common Share (Details Textual) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017
Common Stock, Shares Authorized		750,000,000	750,000,000
Common Stock, Par or Stated Value Per Share		$ 0.25	$ 0.25
Common Stock, Shares, Issued, Total		482,603,937	399,176,425
Treasury Stock, Shares, Ending Balance		5,226,791	4,529,450
Common Stock, Shares, Outstanding, Ending Balance		482,603,937	399,176,425
Preferred Stock, Shares Outstanding, Ending Balance	157,816	157,816	157,816
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance	0	0	0
Class of Warrant or Right, Outstanding	0	0	0
Restricted Stock Units (RSUs) [Member]
Incremental Common Shares Attributable to Share-based Payment Arrangements, Total	4,309,440
Deferred Shares [Member]
Incremental Common Shares Attributable to Share-based Payment Arrangements, Total	635,602