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Derivative Instruments and Hedging Activities (Tables)
 9 Months Ended
Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of Interest Rate Derivative Instruments The following table summarizes the interest rate swap agreements.
December 2016 HedgeJune 2018 Hedge
Notional Amount
$50 million
$20 million (1)
Effective DateDecember 30, 2016June 29, 2018
IndexOne month LIBOROne month LIBOR
MaturityDecember 31, 2019December 31, 2021
Fixed Rate1.59 %2.98 %

(1) The notional amount increases to $70 million upon maturity of December 2016 hedge on December 31, 2019.