XML 69 R53.htm IDEA: XBRL DOCUMENT v3.8.0.1
Note 9 - Preferred Stock (Details Textual)
 12 Months Ended
Dec. 31, 2017
$ / shares
shares
Jan. 01, 2017
shares
Preferred Stock, Shares Authorized | shares 5,000,000  
Preferred Stock, Par or Stated Value Per Share $ 1  
Preferred Stock, Shares Issued | shares 0 0
Number of Purchase Rights 1  
Percentage Of Acquisition Of Outstanding Common Stock Causing Dilution 15.00%  
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right | shares 1  
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 90  
Minimum Preferential Dividend Per Share $ 1  
Dividend Declared Rate Over Per Common Stock 100  
Preferred Stock, Liquidation Preference Per Share $ 1  
Dividends, Number of Quarterly Payments 6  
Series B Preferred Stock [Member]    
Number Of Votes Per Share Entitled To Preferred Stock Holders 100