The following table summarizes the major components of debt at each balance sheet date and provides maturities and interest rate ranges for each major category as of June 30, 2020 and December 31, 2019:



	June 30, 2020			December 31, 2019
Various equipment notes entered into in November 2017, payable in monthly installments ranging from $6 to $24, including interest at 5.2%, maturing in December 2022 through December 2023. The notes are secured by equipment with a net book value of $2,752 as of June 30, 2020.	$	3,411		$	3,937
Various equipment notes entered into in 2018, payable in monthly installments ranging from $1 to $39, including interest ranging from 5.6% to 6.8%, maturing in March 2023 through May 2025. The notes are secured by equipment with a net book value of $8,756 as of June 30, 2020.	9,453			10,429
Various equipment notes entered into in 2019, payable in monthly installments ranging from $2 to $23, including interest ranging from 3.9% to 6.4%, maturing in April 2021 through December 2024. The notes are secured by equipment with a net book value of $3,386 as of June 30, 2020.	3,917			4,333
In June 2018, the Company entered into a $12,000 non-revolving credit note with a bank. The credit note converted to a term loan on April 10, 2019 and was amended in November 2019, December 2019 and April 2020. Pursuant to the terms of the amendment, this loan was amended to require a maturity date of December 31, 2020 and interest on borrowings to be calculated at a fixed rate per annum equal to 5.9%. The note is secured by equipment with a net book value of $7,406 as of June 30, 2020.	8,641			9,900
In July 2019, the Company entered into a commercial insurance premium financing agreement, payable in monthly installments of $169, including interest of 4.4%, that matured in March 2020.	—			506
In April 2020, the Company entered into a commercial insurance premium financing agreement, payable in monthly installments ranging from $22 to $57, including interest of 3.4%, maturing in February 2021.	549			—
A $10,000 equipment line with a bank, entered into in December 2017, secured by all equipment purchased with the proceeds of the loan. Interest is calculated on any outstanding amounts using a fixed rate of 4.5%. The equipment line converted to a term loan in September 2018, with a maturity date of June 22, 2023. The term loan is secured by equipment with a net book value of $5,689 as of June 30, 2020.	6,766			7,719
Pursuant to the terms of the Third Amendment, the Closing Date Term Loan and the Delayed Draw Term Loan entered into in September 2018 as part of the Syndicated Credit Facility (see also Note 9), maturing July 2022. The interest rate applicable to the Closing Date Term Loan and the Delayed Draw Term Loan is based on a fluctuating rate of interest measured by reference to, at the Company’s election, either (i) the Eurodollar rate, currently the LIBOR rate, or (ii) an alternative base rate. With respect to the Closing Date Term Loan, principal payments required are $854 monthly from July 2020 through September 2020, $1,153 monthly from October 2020 through December 2020, $1,280 monthly from January 2021 through December 2021, and $1,500 monthly thereafter. With respect to the Delayed Draw Term Loan, principal payments required are $833 monthly from July 2020 through March 2021. Beginning in April 2021, the then outstanding principal balance of the Delayed Draw Term Loans will be payable in sixteen equal installments monthly thereafter. The term loan is secured by substantially all the assets of the Company and is subject to certain financial covenants.	161,225			152,188
Total	193,962			189,012
Less debt issuance costs	(1,410		)	(3,441		)
	192,552			185,571
Less current maturities	(38,721		)	(34,873		)
Notes payable due after one year	$	153,831		$	150,698