Commitments and Contingent Liabilities (Tables)

12 Months Ended

Dec. 31, 2020

Commitments and Contingencies Disclosure [Abstract]

Schedule of Product Warranty Liability

The following table sets forth the Company’s product warranty accrual:

	Warranty Liability
Balance as of December 31, 2019	$	1,222
Additions to warranty liability	801
Warranty liability utilized	(774)
Balance as of December 31, 2020	$	1,249

Schedule of Future Payments of Legal Settlements

The expected payments under the UPRR settlement agreement for the year ending December 31, 2021 and thereafter were as follows:

Year Ending December 31,
2021	$	8,000
2022	8,000
2023	8,000
2024	8,000
Total	$	32,000

Environmental Loss Contingencies

The following table sets forth the Company’s undiscounted environmental obligation:

	Environmental Liability
Balance as of December 31, 2019	$	2,608
Additions to environmental obligations	8
Environmental obligations utilized	(54)
Balance as of December 31, 2020	$	2,562