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Derivative Financial Instruments and Hedging Activities - Schedule of Changes in AOCL (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning balance $ 1,763    
Other, net of taxes 0 $ 0 $ 4
Ending balance 1,450 1,763  
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning balance 1,763 8,413 10,151
Losses on terminated cash flow hedging relationships amortized to earnings (337) (7,042) (1,982)
Decrease in deferred taxes on accumulated losses on cash flow hedges 24 392 248
Decrease in accumulated losses on cash flow hedges, net of taxes (313) (6,650) (1,734)
Other, net of taxes 0 0 (4)
Ending balance $ 1,450 $ 1,763 $ 8,413