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K. INCOME TAXES - PROVISION FOR INCOME TAX EXPENSE (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Current                    
Federal               $ (15) $ 168 $ 193
State               256 207 6
Foreign               962    
Total               1,203 375 199
Deferred:                    
Federal               (10,794)    
State               (130)    
Foreign               (510)    
Total               (11,434)    
Tax (benefit) expense $ 1,241 $ (11,332) $ 52 $ (192) $ (166) $ 406 $ 135 $ (10,231) $ 375 $ 199