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Note 16 - Accumulated Other Comprehensive Loss - Summary of Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Pension liability adjustment, net of income tax benefit of $886 and $966 $ (1,493) $ (1,624)  
Deferred gain on cash flow derivatives, net of income tax expense of $6 and $49 10 86  
Total $ (1,483) $ (1,538) $ (1,833)