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Consolidated Financial Statement Components (Tables)
9 Months Ended
Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Summary of Depreciation, Amortization and Accretion
Depreciation and accretion expenses consisted of the following for the periods stated:
For the Three Months Ended September 30,For the Nine Months Ended September 30,
(Dollars in thousands)2023202220232022
Depreciation
Leasehold improvements$24 $16 $51 $51 
Asset retirement costs66 (176)196 (526)
Paging and computer equipment959 763 2,864 2,413 
Furniture, fixtures and vehicles54 55 165 185 
Total depreciation1,103 658 3,276 2,123 
Accretion164 170 492 510 
Total depreciation and accretion expense$1,267 $828 $3,768 $2,633 
Schedule of Property, Plant and Equipment
Property and equipment, net consisted of the following as of the dates stated:
(Dollars in thousands)Useful Life
 (In Years)
September 30, 2023December 31, 2022
Leasehold improvementsshorter of useful life or lease term$2,584 $2,497 
Asset retirement costs
1-5
3,848 3,848 
Paging and computer equipment
1-5
86,973 88,427 
Furniture, fixtures and vehicles
3-5
3,109 3,289 
Total property and equipment96,514 98,061 
Accumulated depreciation(89,138)(89,838)
Total property and equipment, net$7,376 $8,223