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Revenue, Deferred Revenue and Prepaid Commissions (Tables)
 12 Months Ended
Dec. 31, 2023
Revenue from Contract with Customer [Abstract]  
Schedule of Revenue
The following table presents our revenues disaggregated by revenue type:
For the Year Ended December 31,
(Dollars in thousands)202320222021
Revenue:
Paging revenue$73,135 $73,323 $75,845 
Product and other revenue2,833 2,299 2,981 
Wireless revenue$75,968 $75,622 $78,826 
License$8,721 $7,202 $5,917 
Professional services14,694 12,565 17,161 
Hardware2,675 2,211 2,267 
Operations revenue26,090 21,978 25,345 
Maintenance36,967 36,934 37,982 
Software revenue$63,057 $58,912 $63,327 
Total revenue$139,025 $134,534 $142,153 
The Company is currently structured as a single operating (and reportable) segment, a clinical communication and collaboration business. The U.S. was the only country that accounted for more than 10% of the Company’s total revenue for the years ended December 31, 2023, 2022 and 2021. Revenue generated in the U.S. and internationally consisted of the following for the periods stated:
 For the Year Ended December 31,
(Dollars in thousands)202320222021
Revenue:
United States$135,804 $130,380 $138,265 
International3,221 4,154 3,888 
Total revenue$139,025 $134,534 $142,153 
Schedule of Deferred Revenue Changes in the balance of total deferred revenue during the year ended December 31, 2023, are as follows:
(Dollars in thousands)December 31, 2022AdditionsRevenue RecognizedDecember 31, 2023
Deferred Revenue$27,505 $61,378 $(61,937)$26,946 
Schedule of Deferred Commissions Changes in the balance of total prepaid commissions during the year ended December 31, 2023, are as follows:
(Dollars in thousands)December 31, 2022AdditionsCommissions RecognizedDecember 31, 2023
Prepaid Commissions$1,745 $5,057 $(4,517)$2,285