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Derivative Instrument and Hedging Activity - Accumulated Derivative Instrument Gain (Loss) Activity (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2020
USD ($)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]  
Balance at beginning of year $ 167,263
Balance at end of year 179,935
Accumulated Derivative Instrument Gain  
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]  
Balance at beginning of year (179)
Net change associated with current period hedging transactions (1,595)
Balance at end of year $ (1,774)