Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Fair Value - Investment Assets Measured at Fair Value (Details)

v3.6.0.2
Note 5 - Fair Value - Investment Assets Measured at Fair Value (Details) - USD ($)
$ in Thousands
Jan. 01, 2017
Mar. 27, 2016
Assets:    
Investment assets $ 190,735 $ 47
US Government Corporations and Agencies Securities [Member]    
Assets:    
Investment assets 21,161  
Corporate Debt Securities [Member]    
Assets:    
Investment assets 96,993  
US States and Political Subdivisions Debt Securities [Member]    
Assets:    
Investment assets 4,195  
Fair Value, Inputs, Level 1 [Member]    
Assets:    
Investment assets 76,155 4
Fair Value, Inputs, Level 1 [Member] | US Government Corporations and Agencies Securities [Member]    
Assets:    
Investment assets 11,041  
Fair Value, Inputs, Level 1 [Member] | Corporate Debt Securities [Member]    
Assets:    
Investment assets  
Fair Value, Inputs, Level 1 [Member] | US States and Political Subdivisions Debt Securities [Member]    
Assets:    
Investment assets  
Fair Value, Inputs, Level 2 [Member]    
Assets:    
Investment assets 114,580 43
Fair Value, Inputs, Level 2 [Member] | US Government Corporations and Agencies Securities [Member]    
Assets:    
Investment assets 10,120  
Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member]    
Assets:    
Investment assets 96,993  
Fair Value, Inputs, Level 2 [Member] | US States and Political Subdivisions Debt Securities [Member]    
Assets:    
Investment assets 4,195  
Money Market Funds [Member]    
Assets:    
Investment assets 65,114 4
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]    
Assets:    
Investment assets 65,114 4
Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member]    
Assets:    
Investment assets
CounterPath [Member]    
Assets:    
Investment assets   43
CounterPath [Member] | Fair Value, Inputs, Level 1 [Member]    
Assets:    
Investment assets  
CounterPath [Member] | Fair Value, Inputs, Level 2 [Member]    
Assets:    
Investment assets   $ 43
Certificates of Deposit [Member]    
Assets:    
Investment assets 3,272  
Certificates of Deposit [Member] | Fair Value, Inputs, Level 1 [Member]    
Assets:    
Investment assets  
Certificates of Deposit [Member] | Fair Value, Inputs, Level 2 [Member]    
Assets:    
Investment assets $ 3,272