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Consolidated Financial Statements' Components (Tables)
12 Months Ended
Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Summary of Depreciation, Amortization and Accretion
Depreciation, amortization and accretion consisted of the following for the periods stated:
For the Year Ended December 31,
(Dollars in thousands)202120202019
Depreciation
Leasehold improvements$88 $57 $63 
Asset retirement costs(87)(643)(766)
Paging and computer equipment3,797 5,291 6,526 
Furniture, fixtures and vehicles258 307 374 
Total depreciation4,056 5,012 6,197 
Amortization
Intangible assets417 2,500 2,500 
Capitalized software development costs5,357 1,073 — 
Total amortization5,774 3,573 2,500 
Accretion616 471 552 
Total depreciation, amortization and accretion expense$10,446 $9,056 $9,249 
Property, Plant and Equipment
Property and equipment, net consisted of the following for the periods stated:
Useful Life
 (In Years)
For the Year Ended December 31,
(Dollars in thousands)20212020
Leasehold improvementslease term$3,307 $3,628 
Asset retirement costs
1-5
2,307 3,717 
Paging and computer equipment
1-5
89,844 92,608 
Furniture, fixtures and vehicles
3-5
3,668 3,517 
Total property and equipment99,126 103,470 
Accumulated depreciation(92,380)(95,655)
Total property and equipment, net$6,746 $7,815