6. Leases

Rent expense is recognized on a straight-line basis over the period of the lease taking into account future rent escalation and holiday periods.

Rent expense for the years ended December 31, 2021 and 2020 was as follows:

	Year ended
	December 31,
	2021		2020
Rent expense	$	719	$	719

We occupy a 1,350 square-foot facility in Gainesville, Florida under the terms of an operating lease expiring in February 2023. The Gainesville facility is used primarily to support our research and development activities.

We occupy a 21,443 square-foot facility in Salt Lake City, Utah under the terms of an operating lease expiring in March 2024, with an option to extend for additional five years. The facility supports our principal administrative, sales, marketing, customer support, and research and product development activities.

We occupy a 950 square-foot facility in Austin, Texas under the terms of an operating lease expiring in October 2022. This facility supports our sales, marketing, customer support, and research and development activities.

We occupy a 3,068 square-foot facility in Zaragoza, Spain under the terms of an operating lease that expired in March 2022. This office supported our research and development and customer support activities.

We occupy a 6,175 square-foot facility in Chennai, India under the terms of an operating lease expiring in August 2023. This facility supports our administrative, marketing, customer support, and research and product development activities.

We occupy a 40,000 square-foot warehouse in Salt Lake City, Utah under the terms of an operating lease expiring in April 2025, which serves as our primary inventory fulfillment center.

Supplemental cash flow information related to leases was as follows:

	Year ended December 31,
	2021			2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	685	$	718
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	$	212	$	97

Supplemental balance sheet information related to leases was as follows:

	December 31, 2021				December 31, 2020
Operating lease right-of-use assets	$	1,537		$	1,936

Current portion of operating lease liabilities, included in accrued liabilities	$	623		$	579
Operating lease liabilities, net of current portion		1,026			1,489
Total operating lease liabilities	$	1,649		$	2,068

Weighted average remaining lease term for operating leases (in years)		2.64			3.54
Weighted average discount rate for operating leases		5.87	%		6.1	%

The following represents maturities of operating lease liabilities as of December 31, 2021:

Years ending December 31,
2022	$	703
2023		671
2024		343
2025		69
2026		-
Total lease payments		1,786
Less: Imputed interest		(137	)
Total	$	1,649