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Revenue, Deferred Revenue and Prepaid Commissions (Tables)
 12 Months Ended
Dec. 31, 2022
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)202220212020
Revenue:
Paging revenue$73,323 $75,845 $79,916 
Product and other revenue2,299 2,981 3,677 
Wireless revenue$75,622 $78,826 $83,593 
License$7,202 $5,917 $5,245 
Professional services12,565 17,161 17,910 
Hardware2,211 2,267 2,841 
Operations revenue21,978 25,345 25,996 
Maintenance36,934 37,982 38,591 
Software revenue$58,912 $63,327 $64,587 
Total revenue$134,534 $142,153 $148,180 
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, 2022, 2021 and 2020. 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)202220212020
Revenue:
United States$130,380 $138,265 $145,349 
International4,154 3,888 2,831 
Total revenue$134,534 $142,153 $148,180 
Schedule of Deferred Revenue Changes in the balance of total deferred revenue during the twelve months ended December 31, 2022, are as follows:
(Dollars in thousands)December 31, 2021AdditionsRevenue RecognizedDecember 31, 2022
Deferred Revenue$26,406 $58,536 $(58,418)$26,524 
Schedule of Deferred Commissions Changes in the balance of total prepaid commissions during the year ended December 31, 2022, are as follows:
(Dollars in thousands)December 31, 2021AdditionsCommissions RecognizedDecember 31, 2022
Prepaid Commissions$1,821 $3,957 $(4,033)$1,745