Debt (Tables)

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Company's borrowings

The Company’s term debt at December 31 is as follows:

	2019		2018
2.75% Convertible Senior Notes, matured and paid in June 2019	$	—	$	66,361
4.00% Convertible Senior Notes, $89,627 face amount, due in June 2036	69,668		75,477
REG Danville term loan, secured, variable interest rate of LIBOR plus 4%, due in July 2022	6,468		8,964
REG Ralston term loan, variable interest rate of LIBOR plus 2.25%, due in October 2025	15,980		18,948
REG Grays Harbor term loan, variable interest of minimum 3.5% or Prime Rate plus 0.25%, due in May 2022	6,966		8,828
REG Capital term loan, fixed interest rate of 3.99%, due in January 2028	6,929		7,185
Other	33		54
Total debt before debt issuance costs	106,044		185,817
Less: Current portion of long-term debt	77,131		149,006
Less: Debt issuance costs (net of accumulated amortization of $1,139 and $3,873, respectively)	2,783		3,390
Total long-term debt	$	26,130	$	33,421

Summary of company's revolving borrowings

The following table shows the Company's lines of credit:

	2019		2018
Total revolving loans (current)	$	76,990	$	14,250
Maximum remaining available to be borrowed under revolving lines of credit	$	101,485	$	114,889

Summary of maturities of the term borrowings

Maturities of the term debt, including the convertible notes, are as follows for the years ending December 31:

2020	$	77,131
2021	7,560
2022	5,989
2023	3,875
2024	3,476
Thereafter	8,013
Total term debt	106,044
Less: current portion	77,131
Total long-term debt before debt issuance costs	$	28,913