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Consolidated Financial Statements' Components
 6 Months Ended
Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Consolidated Financial Statements' Components CONSOLIDATED FINANCIAL STATEMENTS' COMPONENTS
Depreciation and Accretion
Depreciation and accretion expenses consisted of the following for the periods stated:
For the Three Months Ended June 30,
For the Six Months Ended June 30,
(Dollars in thousands)2024202320242023
Depreciation
Leasehold improvements$39 $14 $75 $27 
Asset retirement costs(104)64 (208)130 
Paging and computer equipment877 967 1,778 1,905 
Furniture, fixtures and vehicles80 56 141 111 
Total depreciation892 1,101 1,786 2,173 
Accretion175 164 349 328 
Total depreciation and accretion expense$1,067 $1,265 $2,135 $2,501 
Accounts Receivable, Net
Accounts receivable was recorded net of an allowance of $0.9 million at June 30, 2024, and $1.6 million at December 31, 2023. Accounts receivable, net includes $8.2 million and $6.0 million of unbilled receivables at June 30, 2024, and December 31, 2023, respectively. Unbilled receivables are defined as the Company's right to consideration in exchange for goods or services that we have transferred to the customer but have not yet billed for, generally as a result of contractual billing terms.
Property and Equipment, Net
Property and equipment, net consisted of the following as of the dates stated:
(Dollars in thousands)Useful Life
 (In Years)		June 30, 2024December 31, 2023
Leasehold improvements
lease term
$2,279 $2,202 
Asset retirement costs
1-5
3,722 3,722 
Paging and computer equipment
1-5
85,625 86,332 
Furniture, fixtures and vehicles
3-5
3,204 3,129 
Total property and equipment94,830 95,385 
Accumulated depreciation(87,774)(88,064)
Total property and equipment, net$7,056 $7,321