Derivative Instruments	12 Months Ended
Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	12. Derivative Instruments In 2013, the Company entered into an interest rate corridor to manage its 30-day LIBOR interest exposure related to its variable rate debt. In December 2019 this cash flow hedge expired, $1,100 was reclassified from accumulated other comprehensive income into interest expense in the consolidated income statement. The fair value of the interest rate corridor instrument as of December 31, 2018 was $600, which was included in other assets. The fair value of the derivative instrument was determined using a hypothetical derivative transaction and Level 2 of the hierarchy of valuation inputs. The adjustments of $497, $157, and $17 for the years ended December 31, 2019, 2018 and 2017, respectively, for the effective portion of the gain/loss on the derivative is included as a component of other comprehensive income, net of taxes. The interest rate corridor instrument reduced variable interest rate risk starting March 1, 2013 through December 20, 2019. The corridor instrument’s terms permitted the Company to hedge its interest rate risk at several thresholds; the Company paid variable interest monthly based on the 30-day LIBOR rates until that index reached 1.5%. If 30-day LIBOR was equal to 1.5% through 3.0%, the Company paid 1.5%. If 30-day LIBOR exceeded 3.0%, the Company paid actual 30-day LIBOR less 1.5%. Therefore, the Company hedged its exposure to future variable rate cash flows through December 20, 2019.

Derivative Instruments

12 Months Ended

Dec. 31, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

12. Derivative Instruments

In 2013, the Company entered into an interest rate corridor to manage its 30-day LIBOR interest exposure related to its variable rate debt. In December 2019 this cash flow hedge expired, $1,100 was reclassified from accumulated other

comprehensive income into interest expense in the consolidated income statement. The fair value of the interest rate corridor instrument as of December 31, 2018 was $600, which was included in other assets. The fair value of the derivative instrument was determined using a hypothetical derivative transaction and Level 2 of the hierarchy of valuation inputs. The adjustments of $497, $157, and $17 for the years ended December 31, 2019, 2018 and 2017, respectively, for the effective portion of the gain/loss on the derivative is included as a component of other comprehensive income, net of taxes.

The interest rate corridor instrument reduced variable interest rate risk starting March 1, 2013 through December 20, 2019. The corridor instrument’s terms permitted the Company to hedge its interest rate risk at several thresholds; the Company paid variable interest monthly based on the 30-day LIBOR rates until that index reached 1.5%. If 30-day LIBOR was equal to 1.5% through 3.0%, the Company paid 1.5%. If 30-day LIBOR exceeded 3.0%, the Company paid actual 30-day LIBOR less 1.5%. Therefore, the Company hedged its exposure to future variable rate cash flows through December 20, 2019.