COMMITMENTS AND CONTINGENCIES (Tables)

12 Months Ended

Dec. 31, 2020

The commitments are noted in the table below.

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* Estimated annual contractual obligations are based on the same payment levels as 2020.

Supplemental balance sheet information related to leases was as follows:


	As of December 31, 2020			As of December 31, 2019
Operating leases
Other assets: Other	$	15,589		$	14,402

Other accrued liabilities	$	1,757		$	1,452
Other long-term liabilities	13,868			12,928
Total operating lease liabilities	$	15,625		$	14,380

Finance leases
Depreciable plant and equipment	$	18,207		$	18,207
Accumulated depreciation and amortization	(10,813)			(9,644)
Net utility plant	$	7,394		$	8,563

Current maturities of long-term debt, net	$	721		$	680
Long-term debt, net	4,483			5,205
Total finance lease liabilities	$	5,204		$	5,885

Weighted average remaining lease term
Operating leases	135 months			152 months
Finance leases	64 months			76 months

Weighted average discount rate
Operating leases	3.5		%	3.7		%
Finance leases	5.5		%	5.5		%

The components of lease expense were as follows:


	2020		2019
Operating lease cost	$	2,284	$	1,874

Finance lease cost:
Amortization of right-of-use assets	$	1,169	$	1,210
Interest on lease liabilities	306		347
Total finance lease cost	$	1,475	$	1,557

Short-term lease cost	$	2,048	$	1,700
Variable lease cost	306		264
Total lease cost	$	6,113	$	5,395

Supplemental cash flow information related to leases was as follows:


	2020		2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	2,306	$	1,820
Operating cash flows from finance leases	306		347
Financing cash flows from finance leases	680		672
Non-cash activities: right-of-use assets obtained in exchange for lease obligations:
Operating leases	3,100		2,109
Finance leases	—		672

Maturities of lease liabilities as of December 31, 2020 are as follows:

Maturities of lease liabilities as of December 31, 2020 are as follows: