The Company adopted ASC 842, which became effective on January 1, 2021, using the effective date transition method, which requires a cumulative-effect adjustment to the opening balance of retained earnings on the effective date. As a result of adopting ASC 842, the Company recognized right-of-use assets and lease liabilities of $3.2 million and $3.5 million, respectively, as of January 1, 2021. There was no impact to opening retained earnings or to the condensed consolidated statement of operations from the adoption of ASC 842.

The Company has made certain assumptions and judgements when applying ASC 842 including the adoption of the package of practical expedients available for transition. The practical expedients did not require the Company to reassess (i) whether expired or existing contracts contained leases, (ii) lease classification for expired or existing leases and (iii) previously capitalized initial direct costs. The Company also elected not to recognize right-of-use assets and lease liabilities for short-term leases (lease terms of twelve months or less).

Operating lease arrangements primarily consist of office, warehouse, and test house leases expiring during different years through 2025. The facility leases have original lease terms of approximately two to five years and may contain options to extend up to 5 years and/or terminate early. Options to extend are included in leased right-of-use assets and lease liabilities in the consolidated balance sheet when the Company is reasonably certain it will renew a lease. Since the implicit rate of such leases is unknown and the Company may not be reasonably certain to renew its leases, the Company has elected to apply a collateralized incremental borrowing rate to facility leases on the original lease term in calculating the present value of future lease payments. As of September 30, 2022 and December 31, 2021, the weighted average discount rate for operating leases was 3.9% and 3.6%, respectively, and the weighted average remaining lease term for operating leases was 2.9 years and 3.7 years, respectively.

The Company has entered into various short-term operating leases, primarily for test houses and office equipment with initial terms of 12 months or less. These short-term leases are not recorded on the Company's consolidated balance sheet and the related short-term lease expense was $21,000 and $43,000,for the three months ended September 30, 2022 and 2021, respectively. Total operating lease cost was $0.2 million and $0.3 million for the three months ended September 30, 2022 and 2021, respectively and $0.8 million and $1.0 million for the nine months ended September 30, 2022 and 2021, respectively.

The table below presents aggregate future minimum payments due under leases, reconciled to lease liabilities included in the consolidated balance sheet as of September 30, 2022 (in thousands):


	Estimated future lease obligation
2022 (remaining three months)	$	258
2023		974
2024		902
2025		687
Total minimum payments		2,821
Less imputed interest		(158	)
Less unrealized translation gain		7
Total lease liabilities		2,670
Less short-term lease liabilities		(888	)
Long-term lease liability	$	1,782