The changes in the carrying amount of goodwill for the year ended December 31, 2023 are as follows:


(In thousands)	Network Solutions			Services & Support			Total
As of December 31, 2022	$	298,280		$	83,444		$	381,724
Goodwill impairment		—			(37,500	)		(37,500	)
Correction of a purchase allocation adjustment		(9,662	)		9,662			—
Foreign currency translation adjustments		8,413			778			9,191
As of December 31, 2023	$	297,031		$	56,384		$	353,415

Due to the Company's decreased market capitalization and long-term projections, a reassessment of our estimated future undiscounted cash flows within our two identified reporting units was triggered. Therefore an interim impairment test over goodwill was performed as of September 30, 2023. The Company determined the fair value of each reporting unit using a combination of an income approach and a market based peer group analysis. Management’s determination of the fair value of our reporting units, based on future cash flows for the reporting units, requires significant judgment and the use of estimates and assumptions related to cash flow projections, discount rate, peer group determination and market multiple selection. It was determined that the decreases in projected future cash flows, discount rates, overall macroeconomic conditions, as well as the decrease in our market capitalization applied in the valuation, were required to align with market-based assumptions and company-specific risk, which resulted in lower fair values of the Services & Support reporting unit. As a result of the interim assessment, the Company recorded a goodwill impairment charge of $37.9 million as its estimated fair value was less than its book value on that date.

The Company’s annual impairment test date is October 1, 2023. The Company concluded that there was no goodwill impairment as of that date as there was no change in enterprise value from the September 30, 2023 testing date. Between the annual impairment date of October 1, 2023 and year-end December 31, 2023, there were no additional triggering events.

As of December 31, 2023, accumulated goodwill impairment losses in total were $37.9 million. There were no accumulated goodwill impairment losses as of December 31, 2022. No impairment charges on goodwill were recognized during the years ended December 31, 2022 and 2021.