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Business Combinations - Pro forma information (Details) - Healthcare Resource Group, Inc. - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Business Acquisition [Line Items]    
Pro forma revenues $ 332,988 $ 314,474
Pro forma net income $ 16,629 $ 16,572
Pro forma diluted earnings per share (in dollars per share) $ 1.13 $ 1.13