The Company leases office space, storage warehouses and certain plant equipment under various operating leases. The Company’s operating leases have remaining lease terms of less than 1 year to 8 years. Lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option.

For the nine months ended September 30, 2021 and September 30, 2020, total operating lease expense was $6.1 million and $6.3 million, respectively. The weighted average remaining lease term at September 30, 2021 and December 31, 2020 was 6 years and 5.6 years, respectively. The weighted average discount rate at September 30, 2021 and December 31, 2020 was 2.49% and 3.47%, respectively.

The following table includes supplemental cash flow information for the nine months ended September 30, 2021 and September 30, 2020 and supplemental balance sheet information at September 30, 2021 and December 31, 2020 related to operating leases (in thousands):


	Nine Months Ended September 30,
Supplemental cash flow information	2021		2020
Cash paid for amounts included in the measurement of operating lease liabilities	$	6,196	$	6,506
Operating ROU assets obtained in exchange for lease liabilities	$	7,047	$	2,254

Supplemental balance sheet information	September 30, 2021		December 31, 2020
Operating lease ROU assets	$	36,137	$	34,382

Operating lease liabilities:
Accrued expenses and other current liabilities	$	7,221	$	6,708
Operating lease liabilities		29,716		28,579

Total operating lease liabilities	$	36,937	$	35,287

The following table summarizes maturities of operating lease liabilities at September 30, 2021 (in thousands):


Maturities of operating lease liabilities
2021	$	2,067
2022		7,808
2023		6,833
2024		6,475
2025		4,523
Thereafter		12,044

Total lease payments		39,750
Less imputed interest		(2,813	)

Total operating lease liabilities	$	36,937