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Commitments and Contingencies | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Dec. 31, 2021 | Dec. 31, 2020
Commitments and Contingencies [Line Items] |  |  |
Commitments and Contingencies |  | 21) Commitments and Contingencies Litigation The Company may be a party to routine claims or litigation incidental to its business. The Company does not believe that it is a party to any pending legal proceeding that is likely to have a material adverse effect on its business, financial condition or results of operations or cash flows. In connection with a credit facility amendment executed with PacWest on August 9, 2017, the Company agreed to issue the bank warrants to acquire Membership Units. In 2018, the Company and the bank agreed that 3,388 warrants would be issued at a strike price of $35.42 per unit, which was subsequently reflected in the Company’s books and records. Following the Company’s announcement of the Master Transactions Agreement (“MTA”), on February 3, 2021, PacWest issued a letter to the Company demanding 52,632 warrants in satisfaction of the provisions contained in the August 9, 2017 credit facility amendment. On June 8, 2021, the Company and PacWest entered into a settlement agreement and mutual release where both parties acknowledged and agreed that the original 3,388 warrants issued were in full compliance of the credit facility amendment. Lease Commitments The Company’s lease arrangements consist primarily of corporate and manufacturing facility agreements. The leases expire at various dates through 2028, some of which include options to extend the lease term. The options with the longest potential total lease term consist of options for extension of up to five years following expiration of the original lease term. All of the leases are operating leases. The Company is headquartered in Aliso Viejo, California and has various research and design centers, sales support offices, and manufacturing facilities throughout the world. The key lease terms for the principal locations are summarized below: In July 2015, the Company entered into a five-year operating lease for its 14,881 square foot headquarters in Aliso Viejo, California, which is payable monthly with periodic rent adjustments over the lease term. The lease requires a security deposit of $30, which is recorded in other assets on the Company’s consolidated balance sheets as well as a tiered, time-based letter of credit that has now reached its lowest tier of $200. Subsequently, the rentable area was expanded to 18,000 square feet and the lease was extended through the end of June 2023. Rent expense is approximately $38 per month. In October 2015, the Company entered into a five-year operating lease for its Scotland Design Center in Edinburgh, Scotland, which is payable monthly with periodic rent adjustments over the lease term. The lease expired in October 2020. During 2019, the Company entered into a sub-lease agreement with a third party for the Scotland Design Center facility. Separately, effective January 2020, the Company entered into a lease for a property in Scotland. The lease agreement has a term through June 2024 and monthly rent of approximately $16 per month. In October 2017, the Company entered into a 26-month operating lease for its Wuxi sales and design center. Rent for the associated office is payable monthly with periodic rent adjustments over the lease term. The lease was subsequently extended through December 2022. Rent expense is approximately $8 per month. In May 2021, the Company entered into a seven-year operating lease for a location in Detroit, Michigan, which is payable monthly with periodic rent adjustments over the lease term. The lease will expire in 2028 with an initial monthly rent of approximately $22 per month. In October 2021, the Company entered into a five-year operating lease for its design center in Austin, Texas. Rent for the associated office is payable monthly with periodic rent adjustments over the lease term, which expires in October 2026. Rent expense is approximately $13 per month. In October 2021, the Company acquired TeraXion and assumed its existing operating lease for an office building and a warehouse in Quebec City, Canada. Rent for the associated office is payable at approximately $38 per month. The lease will expire on May 31, 2028. Rent for the associate warehouse is at approximately $3 per month. This lease will expire on November 30, 2023. The total monthly rent for the remainder locations of the Company around the world is not material. Rent expense is recognized on a straight-lined basis over the lease term and is included in the consolidated statements of operations for the years ended December 31, 2021 and 2020 as follows:
|  | Year Ended December 31,
|  | 2021 |  | 2020
Research and development |  | $ | 966 |  | $ | 1,381
Selling, general, and administrative |  |  | 252 |  |  | 551
Cost of goods sold |  |  | 24 |  |  | —
Total |  | $ | 1,242 |  | $ | 1,932
The following table summarizes the future minimum lease payments due under operating leases as of December 31, 2021:
2022 |  | $ | 1,869
2023 |  |  | 1,674
2024 |  |  | 1,303
2025 |  |  | 1,177
2026 |  |  | 1,201
Thereafter |  |  | 1,686
Total |  | $ | 8,910
Royalty Agreement The Company has entered into license agreements to use certain technology within its design and manufacture of its products. The agreements require royalty fees for each semiconductor sold using the licensed technology. Total royalty expense incurred in connection with these contracts during the years ended December 31, 2021 and 2020 was $810 and $386, respectively, which is included in cost of goods sold in the consolidated statements of operations. Accrued royalties of $264 and $139 are included in accrued expenses in the Company’s consolidated balance sheets as of December 31, 2021 and 2020, respectively. Tax Distributions To the extent the Company has funds legally available, the board of directors will approve distributions to each member, prior to March 15 of each year, in an amount per unit that, when added to all other distributions made to such member with respect to the previous calendar year, equals the estimated federal and state income tax liabilities applicable to such member as the result of its, his or her ownership of the units and the associated net taxable income allocated with respect to such units for the previous calendar year. There were no distributions approved by the board of directors or paid by the Company with respect to the years ended December 31, 2021 and 2020. |
Thunder Bridge Acquisition Il, Ltd.[Member] |  |  |
Commitments and Contingencies [Line Items] |  |  |
Commitments and Contingencies | Note 6 — Commitments Registration Rights Pursuant to a registration rights agreement entered into on August 8, 2019, the holders of the Founder Shares, Private Placement Warrants (and their underlying securities) and the warrants that may be issued upon conversion of the Working Capital Loans (and their underlying securities) are entitled to registration rights. The holders of a majority of these securities are entitled to make up to three demands, excluding short form demands, that the Company register such securities. In addition, the holders have certain “piggy-back” registration rights with respect to registration statements filed subsequent to the completion of a Business Combination and rights to require the Company to register for resale such securities pursuant to Rule 415 under the Securities Act. However, the registration rights agreement provides that the Company will not permit any registration statement filed under the Securities Act to become effective until termination of the applicable lock-up period. The Company will bear the expenses incurred in connection with the filing of any such registration statements. Underwriters Agreement The Company granted the underwriters a 45-day option to purchase up to 4,500,000 additional Units to cover over-allotments at the Initial Public Offering price, less the underwriting discounts and commissions, which was exercised on August 13, 2019. The underwriters were paid a cash underwriting discount of 2.0% of the gross proceeds of the Initial Public Offering, or $6,900,000. In addition, the underwriters are entitled to a deferred underwriting discount of 3.5% of the gross proceeds of the Initial Public Offering, or $12,075,000. The deferred commission was placed in the Trust Account and will be paid in cash upon the closing of a Business Combination, subject to the terms of the underwriting agreement. |  | Note 6 — Commitments Registration Rights Pursuant to a registration rights agreement entered into on August 8, 2019, the holders of the Founder Shares, Private Placement Warrants (and their underlying securities) and the warrants that may be issued upon conversion of the Working Capital Loans (and their underlying securities) are entitled to registration rights. The holders of a majority of these securities are entitled to make up to three demands, excluding short form demands, that the Company register such securities. In addition, the holders have certain “piggy-back” registration rights with respect to registration statements filed subsequent to the completion of a Business Combination and rights to require the Company to register for resale such securities pursuant to Rule 415 under the Securities Act. However, the registration rights agreement provides that the Company will not permit any registration statement filed under the Securities Act to become effective until termination of the applicable lock-up period. The Company will bear the expenses incurred in connection with the filing of any such registration statements. Underwriters Agreement The Company granted the underwriters a 45-day option to purchase up to 4,500,000 additional Units to cover over-allotments at the Initial Public Offering price, less the underwriting discounts and commissions, which was exercised on August 13, 2019. The underwriters were paid a cash underwriting discount of 2.0% of the gross proceeds of the Initial Public Offering, or $6,900,000. In addition, the underwriters are entitled to a deferred underwriting discount of 3.5% of the gross proceeds of the Initial Public Offering, or $12,075,000. The deferred commission was placed in the Trust Account and will be paid in cash upon the closing of a Business Combination, subject to the terms of the underwriting agreement.

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