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Derivative Instruments | 9 Months Ended
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Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Derivative Instruments | Derivative Instruments The Company periodically holds interest rate derivative instruments to mitigate exposure to changes in interest rates, predominantly one-month LIBOR, with $603.0 million and $783.1 million of variable rate borrowings at September 30, 2021 and December 31, 2020, respectively. As a matter of policy, management does not use derivatives for speculative purposes. As of September 30, 2021, the Company had five interest rate swap agreements. During the first quarter of 2021, the Company entered into four additional fixed-rate interest swap agreements, each having notional amounts of $100.0 million, two with remaining terms of 28 months and two with remaining terms of 52 months as of September 30, 2021. One interest rate swap agreement was entered into during 2019 which has a notional outstanding amount of $100.0 million with a remaining term of 33 months as of September 30, 2021. One interest rate swap agreement which the Company entered into in 2016 expired in April 2021. The derivative instruments were each designated as cash flow hedges at inception and recorded at fair value. The Company evaluated the effectiveness of the swap agreements to hedge the interest rate risk associated with its variable rate debt and concluded at the swap inception dates that each swap was highly effective in hedging that risk. The Company evaluates the effectiveness of the hedging relationships on an ongoing basis and concluded there was no ineffectiveness in the hedges for the period ended September 30, 2021. The Company estimates the fair value of derivative instruments using a discounted cash flow technique and has used creditworthiness inputs that corroborate observable market data when evaluating the Company’s and counterparty’s risk of non-performance. Valuation of the derivative instruments requires certain assumptions for underlying variables and the use of different assumptions would result in a different valuation. Management believes it has applied assumptions consistently during the period. The Company applies hedge accounting and accounts for the change in fair value of its cash flow hedges through other comprehensive income for all derivative instruments. The net fair value of the interest rate swaps as of September 30, 2021 was $2.4 million, representing an asset of $4.2 million and a liability of $1.8 million. The net fair value of the interest rate swaps as of December 31, 2020 was $4.0 million, representing a liability. The Company recorded interest expense of $0.5 million and $0.7 million during the three months ended September 30, 2021 and 2020, respectively, and $1.9 million and $1.3 million during the nine months ended September 30, 2021 and 2020, respectively, from derivative instruments. Effect of Derivative Instruments on Earnings in the Statements of Income and on Comprehensive Income The following tables provide additional information about the financial statement effects related to the cash flow hedges for the three and nine months ended September 30, 2021 and 2020:
Derivatives in Cash Flow Hedging Relationships |  | Amount of Gain (Loss) Recognized in OCI on Derivatives (Effective Portion)
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
|  | (in thousands) |  | (in thousands)
Interest rate contracts |  | $ | 653 |  |  | $ | 684 |  |  | $ | 6,380 |  |  | $ | (3,088) |
Total |  | $ | 653 |  |  | $ | 684 |  |  | $ | 6,380 |  |  | $ | (3,088) |
The effective portion of the change in fair value on a derivative instrument designated as a cash flow hedge is reported as a component of other comprehensive income and is reclassified into earnings in the period during which the transaction being hedged affects earnings or it is probable that the forecasted transaction will not occur. The ineffective portion of the hedges, if any, is recorded in earnings in the current period. Counterparty Credit Risk The Company evaluates the creditworthiness of the counterparties under its hedging agreements. The counterparties for the interest rate swaps are large financial institutions that possessed investment grade credit ratings. Based on these ratings, the Company believes that the counterparties were credit-worthy and that their continuing performance under the hedging agreements was probable and did not require the counterparties to provide collateral or other security to the Company.

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- Definition The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -URI http://asc.fasb.org/topic&trid=2229140 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 40 -Section 50 -Paragraph 5 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=123477628&loc=d3e90205-114008 + Details
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