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Accumulated Other Comprehensive (Loss) Income (Tables)
12 Months Ended
Dec. 31, 2016
Accumulated Other Comprehensive (Loss) Income  
Schedule of accumulated other comprehensive (loss) income
    Pension
Adjustment
    Unrealized
Gain (Loss) On
Securities
    Foreign
Currency
Translation
    Total  
Balance at December 31, 2014   $ (16,246 )   $ (98 )   $ (1,489 )   $ (17,833 )
Change during 2015:                                
Before-tax amount     1,621       (16 )     (1,801 )     (196 )
Tax (expense) benefit     (592 )     6             (586 )
Reclassification adjustment, net of taxes:                                
Realized loss on securities           144             144  
Amortization of net loss (1)     502                   502  
Total activity in 2015     1,531       134       (1,801 )     (136 )
Balance at December 31, 2015     (14,715 )     36       (3,290 )     (17,969 )
Change during 2016:                                
Before-tax amount     (2,039 )     5       652       (1,382 )
Tax (expense) benefit     744       (2 )           742  
Reclassification adjustment, net of taxes:                                
Realized loss on securities                        
Amortization of net loss (1)     507                   507  
Total activity in 2016     (788 )     3       652       (133 )
Balance at December 31, 2016   $ (15,503 )   $ 39     $ (2,638 )   $ (18,102 )

(1) Reported as part of selling, general and administrative expenses.