Intangible Assets and Goodwill
Intangible assets subject to amortization that are not fully amortized are as follows (in thousands):
Weighted average useful lifeAs of December 31, 2022As of December 31, 2021
Gross Carrying AmountAccumulated AmortizationNet Carrying AmountGross Carrying AmountAccumulated AmortizationNet Carrying Amount
Customer relationships4.85$10,400 $(347)$10,053 $— $— $— 
Reacquired rights6.8517,618 (419)17,199 — — — 
Backlog1.856,700 (558)6,142 — — — 
Other1.275,717 (3,572)2,145 5,717 (1,881)3,836 
Total intangible assets$40,436 $(4,897)$35,539 $5,717 $(1,881)$3,836 
Amortization expense of intangible assets was not material for the years ended December 31, 2022 and 2021.
As of December 31, 2022, expected amortization expense for the unamortized finite-lived intangible assets for the next five years and thereafter is as follows (in thousands):
Year ended December 31,Amount
2023$9,637 
20247,844 
20254,597 
20264,597 
20274,250 
Thereafter4,614 
Total$35,539 
Changes in the carrying amount of goodwill, which is reported in the commercial segment, for the year ended December 31, 2022 are as follows (in thousands):
Amount
Goodwill at December 31, 2021
$1,869 
Acquisitions36,069 
Goodwill at December 31, 2022
$37,938 

About Goodwill & Intangibles Disclosures

Goodwill and intangible asset disclosures reveal the premium paid in acquisitions and how management assesses whether that premium retains its value. Since goodwill is no longer amortized under US GAAP, the annual impairment test is the only mechanism that adjusts carrying values downward — making the assumptions behind that test critically important for investors.

Key signals: a history of goodwill impairments suggests management consistently overpays for acquisitions. Watch the gap between reporting unit fair value and carrying amount — when fair value exceeds carrying amount by less than 10-20%, a small decline in business performance could trigger a write-down. For finite-lived intangibles, examine useful life assumptions across customer relationships, technology, and trade names; aggressive estimates inflate near-term earnings. Compare total intangibles-to-total-assets ratios against peers to assess acquisition dependency. Rising goodwill as a percentage of equity can signal balance sheet fragility.