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Other Comprehensive Income (Loss) - Derivative Instruments Included in Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance, beginning balance     $ 167,498 $ 161,554
Net change $ (1,090) $ 1,315 1,631 (255)
Balance, ending period 175,994 167,141 175,994 167,141
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance, beginning balance (135) 0 0 0
Unrealized gains (losses) arising during the period 298 0 90 0
Related deferred taxes (105) 0 (32) 0
Net change 193 0 58 0
Balance, ending period $ 58 $ 0 $ 58 $ 0