The Company leases office space under agreements classified as operating leases. The Company’s active leases as of June 30, 2022 are for office and manufacturing space in Tucson, Arizona, which expire in 2025. The Company’s leases do not include any contingent rental payments, impose any financial restrictions, or contain any residual value guarantees.

The components of lease cost for operating leases were as follows:


	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Operating leases
Operating lease cost	$	119,458	$	108,024	$	238,916	$	275,703
Variable lease cost		24,086		20,333		51,612		46,484
Total rent expense	$	143,544	$	128,357	$	290,528	$	322,187

The table below summarizes other information related to the Company’s operating leases:


	Six Months Ended June 30,
	2022			2021
Cash paid for amounts included in measurement of operating lease liabilities	$	239,156		$	287,581
Weighted-average remaining lease term – operating leases		2.6			0.6
Weighted-average discount rate – operating leases		5.8	%		6.3	%

Remaining maturities of the Company’s operating leases, included in operating lease liabilities – current and other non-current liabilities, in the condensed consolidated balance sheets as of June 30, 2022 are as follows:


2022	$	242,392
2023		484,719
2024		484,631
2025		40,382
Total		1,252,124
Less present value discount		(91,129	)
Total operating lease liabilities		1,160,995
Less operating lease liabilities - current		(429,200	)
Operating lease liabilities - non-current	$	731,795

The Company has computer and copier equipment leases that are classified as financing leases. Incremental borrowing rates used to discount future lease payments in calculating lease liabilities were estimated by reference to information received by the Company from bankers regarding estimated current borrowing rates for collateralized loans with similar amount and duration as the leases. The Company does not have any material financing leases where it acts as a lessor.

The components of lease cost for financing leases were as follows:


	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Financing leases
Amortization of right-of-use assets	$	4,363	$	5,958	$	8,981	$	13,057
Interest on lease liability		1,023		1,510		2,161		3,175
Total financing lease cost	$	5,386	$	7,468	$	11,142	$	16,232

The table below summarizes other information related to the Company’s financing leases:


	Six Months Ended June 30,
	2022			2021
Weighted-average remaining lease term – financing leases		2.4			3.2
Weighted-average discount rate – financing leases		9.77	%		9.77	%

As of June 30, 2022, remaining maturities of the Company’s financing leases are as follows:


2022	$	9,471
2023		18,396
2024		16,080
Total		43,947
Less present value discount		(4,920	)
Financing lease liabilities, net	$	39,027

Financing lease liabilities net of discount of $15,550 and $23,477 were included in other current liabilities and other non-current liabilities, respectively, and financing right-of-use assets of $34,671 were included in property and equipment, net, in the condensed consolidated balance sheets as of June 30, 2022.