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Derivatives Schedule of Cash Flow Hedges in Accumulated Other Comprehensive Income (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2019
USD ($)
Derivative [Line Items]  
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss) $ (206)
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net 0
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net $ 0