Annual report pursuant to Section 13 and 15(d)

Note 9 - Income Taxes (Details Textual)

v3.8.0.1
Note 9 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Jan. 01, 2017
Operating Loss Carryforwards $ 84,500  
Unrecognized Tax Benefits 0 $ 0
Unrecognized Tax Benefits that Would Impact Effective Tax Rate   $ 287
Deferred Tax Asset, Decrease 8  
Expires Between 2018 And 2022 [Member]    
Operating Loss Carryforwards 5,200  
Expires In 2023 [Member]    
Operating Loss Carryforwards 15,200  
Expires Between 2025 And 2029 [Member]    
Operating Loss Carryforwards 9,600  
Expires in 2030 [Member]    
Operating Loss Carryforwards 19,800  
Expires Between 2031 and 2033 [Member]    
Operating Loss Carryforwards 24,200  
Expires Between 2034 and 2037 [Member]    
Operating Loss Carryforwards 6,900  
Indefinite Carryforward [Member]    
Operating Loss Carryforwards 3,600  
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]    
Operating Loss Carryforwards 53,500  
Foreign Tax Authority [Member] | Canada Revenue Agency [Member]    
Operating Loss Carryforwards 23,300  
Foreign Tax Authority [Member] | Asian Revenue Agency [Member]    
Operating Loss Carryforwards $ 7,700