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Condensed Consolidated Financial Statements' Components
 3 Months Ended
Mar. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Condensed Consolidated Financial Statements' Components CONDENSED CONSOLIDATED FINANCIAL STATEMENTS' COMPONENTS
Depreciation and Accretion
Depreciation and accretion expenses consisted of the following for the periods stated:
For the Three Months Ended March 31,
(Dollars in thousands)20252024
Depreciation
Leasehold improvements$27 $36 
Asset retirement costs23 (104)
Paging and computer equipment723 901 
Furniture, fixtures and vehicles64 61 
Total depreciation837 894 
Accretion22 174 
Total depreciation and accretion expense$859 $1,068 
Accounts Receivable, Net
Accounts receivable was recorded net of an allowance of $1.1 million at March 31, 2025, and $1.0 million at December 31, 2024. Accounts receivable, net includes $6.8 million and $6.4 million of unbilled receivables at March 31, 2025, and December 31, 2024, 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)		March 31, 2025December 31, 2024
Leasehold improvements
lease term
$2,564 $2,430 
Asset retirement costs
1-15
4,864 4,864 
Paging and computer equipment
1-5
83,068 83,895 
Furniture, fixtures and vehicles
3-5
2,504 2,570 
Total property and equipment93,000 93,759 
Accumulated depreciation(87,131)(87,807)
Total property and equipment, net$5,869 $5,952