Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2021

Investments, All Other Investments [Abstract]

Summary of Investments

The following table summarizes activities related to these investments for the three months ended March 31, 2021 and the twelve months ended December 31, 2020 (in thousands):

	Three Months Ended March 31, 2021		Twelve Months Ended December 31, 2020
Fair value at beginning of period	$	25,708	$	60,659
Purchases	—		3,447
Sales	(1,490)		(22,078)
Maturities and calls	(1,600)		(15,409)
Change in bond premium	(83)		(857)
Fair market value adjustment	(142)		(54)
Fair value at end of period	$	22,393	$	25,708

Summary of Outstanding Interest Rate Swaps

The following table summarizes our outstanding interest rate swaps and their classification in the accompanying Condensed Consolidated Balance Sheets at March 31, 2021 and December 31, 2020 (in thousands):

	March 31, 2021
	Notional Amount		Fair Value		Balance Sheet Location
Interest rate swaps	$	85,000	$	(1,299)	Other non-current liabilities

	December 31, 2020
	Notional Amount		Fair Value		Balance Sheet Location
Interest rate swap	$	10,000	$	(13)	Other current liability
Interest rate swaps	$	85,000	$	(2,552)	Other non-current liabilities

Summary of Effects of Interest Rate Swap

The following table summarizes the effects of the interest rate swaps on the accompanying Condensed Consolidated Statements of Comprehensive Income for the three months ended March 31, 2021 and 2020 (in thousands):

	Gain (Loss) Recognized in AOCL, net of tax				Loss Reclassified from AOCL into Expense
	Three Months Ended March 31,				Three Months Ended March 31,
	2021		2020		2021		2020
Interest rate swap	$	961	$	(653)	$	(285)	$	(34)