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Leases
 12 Months Ended
Dec. 31, 2023
Leases [Abstract]  
Leases Leases
The Company has operating leases for administrative offices in the United States and Germany.

As part of the acquisition of IntraNav on December 9, 2021, the Company acquired right-of-use assets and lease liabilities related to an operating lease for an office space (the IntraNav office) located in Frankfurt, Germany. This lease expires on January 6, 2025 and the current lease rate is approximately $9,506 per month.

As part of the acquisition of Nanotron on December 9, 2021, the Company acquired right-of-use assets and lease liabilities related to an operating lease for an office space (the Nanotron office) located in Berlin, Germany. This lease expires on May 31, 2026 and the current lease rate is approximately $8,057 per month.
The Company has no other operating or financing leases with terms greater than 12 months.
Right-of-use assets is summarized below (in thousands):
As of December 31,
2023		As of December 31, 2022
Palo Alto, CA Office$— $630 
Berlin, Germany Office523 508 
Frankfurt, Germany Office304 294 
Less accumulated amortization(492)(905)
Right-of-use asset, net$335 $527 
Lease expense for operating leases recorded in the balance sheet is included in operating costs and expenses and is based on the future minimum lease payments recognized on a straight-line basis over the term of the lease plus any variable lease costs. Operating lease expenses, inclusive of short-term and variable lease expenses, recognized in our consolidated statements of operations for the years ended December 31, 2023 and 2022 was $0.6 million and $0.5 million, respectively.
During the years ended December 31, 2023 and 2022, the Company recorded $0.2 million and $0.3 million, respectively, as rent expense to the right-of-use assets.
During the years ended December 31, 2023 and 2022, the Company recorded short-term lease expenses of $0.2 million and $0.0 million, respectively. During the years ended December 31, 2023 and 2022, the Company recorded variable lease expenses of $0.1 million each year.
Lease liability is summarized below (in thousands):
As of December 31, 2023As of December 31, 2022
Total lease liability$342 $541 
Less: short term portion(201)(207)
Long term portion$141 $334 
Maturity analysis under the lease agreement is as follows (in thousands):
Year ending December 31, 2024$211 
Year ending December 31, 2025110 
Year ending December 31, 202642 
Total$363 
Less: Present value discount(21)
Lease liability$342 
Operating lease liabilities are based on the net present value of the remaining lease payments over the remaining lease term. In determining the present value of lease payments, the Company used its incremental borrowing rate based on the information available at the date of adoption of Topic 842. As of December 31, 2023, the weighted average remaining lease term is 1.96 and the weighted average discount rate used to determine the operating lease liabilities was 3.6%.