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Goodwill and Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
The following table summarizes changes in the carrying amount of goodwill by segment for the year ended December 31, 2021 (in thousands):
TTSWerner LogisticsTotal
Balance as of December 31, 2020$— $— $— 
Goodwill recorded in acquisition of ECM44,710 — 44,710 
Goodwill recorded in acquisition of NEHDS— 36,534 36,534 
Purchase accounting adjustments (1)
(6,626)— (6,626)
Balance as of December 31, 2021$38,084 $36,534 $74,618 
(1) The purchase accounting adjustments are primarily attributable to post-closing adjustments related to assets assumed in, and the redeemable noncontrolling interest associated with, the acquisition of ECM.
Schedule of Finite-Lived Intangible Assets
Acquired intangible assets consists of the following as of December 31, 2021 (in thousands):
Gross
Carrying
Amount		Accumulated
Amortization		Net
Carrying
Amount
Customer relationships$40,200 $(1,177)$39,023 
Trade names17,000 (708)16,292 
Total intangible assets$57,200 $(1,885)$55,315 
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense As of December 31, 2021, the estimated future amortization expense for intangible assets by year is as follows (in thousands):
Estimated
Amortization
Expense
2022$5,437 
20235,437 
20245,437 
20255,437 
20265,437 
Thereafter (to 2033)28,130 
Total$55,315