Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2020

Retirement Benefits [Abstract]

Schedule of Changes in Benefit Obligations, Plan Assets and Funded Status with Amounts Recognized in Consolidated Balance Sheet

The change in benefit obligations, plan assets and funded status along with amounts recognized in the Consolidated Balance Sheet are as follows:

	December 31,
	2020		2019
Change in benefit obligation:
Benefit Obligation, beginning of year	$	42,291	$	24,511
Service Cost	5,493		4,351
Interest Cost	1,469		1,340
Plan Amendment	—		6,569
Actuarial Loss	4,005		5,981
Benefits Paid	(748)		(461)
Benefit Obligation, end of year	52,510		42,291
Change in plan assets:
Fair Value of Plan Assets, beginning of year	24,051		15,716
Actual Return on Plan Assets	4,123		4,025
Employer Contributions	4,617		4,771
Benefits Paid	(748)		(461)
Fair Value of Plan assets, end of year	32,043		24,051
Funded Status at end of period	$	(20,467)	$	(18,240)
Amounts recognized in the Consolidated Balance Sheet:
Non-current assets	$	—	$	—
Current liabilities	—		—
Non-current Liabilities	(20,467)		(18,240)
Net Liability at end of year	$	(20,467)	$	(18,240)
Amounts recognized in accumulated other comprehensive loss:
Prior Service Cost	5,676		6,163
Net actuarial loss	3,689		2,268
Amounts recognized in accumulated other comprehensive loss:	$	9,365	$	8,431

Schedule of Expected Employer Contributions and Future Benefits Payments

The following employer contributions and benefit payments, which reflect expected future service, are expected to be paid as follows:

Employer Contributions
Expected 2021 Contributions by Employer	$	3,905
Future Expected Benefit Payments
2021	$	1,052
2022	1,307
2023	1,487
2024	1,647
2025	1,828
2026-2030	11,754

Schedule of Components of Net Periodic Costs

The components of net periodic pension costs for the Alkali benefit plan are as follows:

	December 31,
	2020		2019		2018
Service Cost	$	5,493	$	4,351	$	5,153
Interest Cost	1,469		1,340		862
Expected Return on Assets	(1,539)		(1,252)		(973)
Amortization of Prior Service Cost	487		406		—
Total Net Periodic Benefit Costs	$	5,910	$	4,845	$	5,042

Schedule of Weighted Average Assumptions Used To Determine Benefit Obligation

The Alkali Business pension plan is administered by a Board-appointed committee that has fiduciary responsibility for the plan's management. The committee is responsible for the oversight and management of the plan's investments. The committee maintains an investment policy that provides guidelines for selection and retention of investment managers or funds, allocation of plan assets and performance review procedures and updating of the policy. The objective of the committee's investment policy is to manage the plan assets in such a way that will allow for the on-going payment of the Company's obligation to the beneficiaries.

Weighted average assumptions used to determine benefit obligation:	December 31, 2020		December 31, 2019
Discount Rate	3.06	%	3.56	%
Expected Long-term Rate of Return	5.47	%	6.06	%
Rate of Compensation Increase	N/A		N/A

The discount rate used to determine the net periodic cost at the beginning of the period was 3.56%.

Schedule of Pension Plan Assets Allocations

Pension plan asset allocations at December 31, 2020 by asset category are as follows:

December 31, 2020
	Target %		Minimum		Maximum
Equity securities	67	%	58	%	76	%
Fixed Income	20	%	11	%	29	%
Alternative Investments	11	%	2	%	20	%
Cash and Equivalents	2	%	—	%	7	%

Schedule of Pension Plan Assets Measured at Fair Value

A summary of total investments for our pension plan assets measured at fair value is presented as of December 31 for the periods below:

	2020								2019
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Cash and cash equivalents	$	32,043	$	—	$	—	$	32,043	$	1,311	$	—	$	—	$	1,311
Equity securities	—		—		—		—		13,192		—		—		13,192
Mutual and other exchange traded funds	—		—		—		—		9,548		—		—		9,548
	$	32,043	$	—	$	—	$	32,043	$	24,051	$	—	$	—	$	24,051