16. LEASES

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Lessee

At December 31, 2021, the Company recorded $17.8 million as a right of use asset and $17.8 million as an operating lease liability. At December 31, 2020, the Company recorded $1.8 million as a right of use asset and $3.0 million as an operating lease liability. The Company assesses its right of use asset and other lease-related assets for impairment. There were no impairments recorded related to these assets during the years ended December 31, 2021 and 2020.

As a result of acquisitions, the Company acquired operating, finance, and short-term leases for corporate offices, manufacturing, warehousing, laboratory and research and development facilities, and company vehicles. The acquired leases increased the Company’s right of use asset by $12.3 million and have various terms extending through 2031.

The Company reviews all supplier, vendor, and service provider contracts to determine whether any service arrangements contain a lease component. The Company identified two service agreements that contain an embedded lease. The agreements do not contain fixed or minimum payments, and the variable lease expense was immaterial during the years ended December 31, 2021 and 2020.

Information about other lease-related balances is as follows (in thousands):

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The rate implicit in the lease is not readily determinable in most of the Company’s leases, and therefore the Company uses its incremental borrowing rate as the discount rate when measuring operating lease liabilities. The incremental borrowing rate represents an estimate of the interest rate the Company would incur at lease commencement to borrow an amount equal to the lease payments on a collateralized basis over the term of the lease.

Future minimum lease payments under noncancelable operating leases at December 31, 2021, are as follows (in thousands):

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As of December 31, 2021, the Company does not have material operating leases that have not commenced.

Lessor

The Company leases machinery and equipment to customers (principally 3D printing machines and related equipment) under lease arrangements classified as either operating leases or sales-type leases. At December 31, 2021, the Company estimated that the total fair market value approximated the related net book value of the machinery and equipment held under the Company’s operating lease arrangements. The Company’s net investment in sales-type lease arrangements at December 31, 2021 is immaterial and is recorded in prepaid expense and other current assets in the consolidated balance sheets. There was no net investment in sales-type lease arrangements at December 31, 2020.

The Company recognized the following components under operating and sales-type lease arrangements in the accompanying consolidated statements of operations and comprehensive loss for the periods indicated:

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^{(1) Interest income related to sales-type leases is recorded as a component of revenue in the consolidated statements of operations and comprehensive loss for each of the periods presented.}

The Company’s net investment in sales-type leases consisted of the following:

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The Company did not record any provisions for bad debt related to lessees during the years ended December 31, 2021 or 2020.

Future minimum lease receipts of non-cancellable operating and sales-type lease arrangements as of December 31, 2021 were as follows:

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