XML 81 R68.htm IDEA: XBRL DOCUMENT v3.22.0.1
Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Tax [Line Items]          
Effective tax rate   20.14% 233.99% 28.19%  
Income tax expense for excess tax deficiencies   $ 1,000 $ 7,100 $ 3,800  
Net operating loss carryforwards for federal and state tax   61,700 35,400 31,500  
Operating loss carryforwards subject to expiration   25,100      
Operating loss carryforwards not subject to expiration     36,600    
Uncertain tax position liability   4,928 6,168 $ 7,409 $ 11,185
Unrecognized tax benefits that would impact effective tax rate   4,900      
Increase (decrease) in uncertain tax position   1,200 1,200    
Company's accrued liability for interest and penalties related to income tax liabilities   800 1,000    
Deferred tax assets   46,935 7,274    
Net deferred tax liabilities     7,300    
Capital losses incurred     1,610,000    
Capital loss carryforwards   1,680,000      
Income Tax , Penalties and Interest Expense   400 $ 500    
Benefit related to a change in estimate of an income tax receivable   $ 10,800      
Federal tax rate   21.00% 21.00% 21.00%  
Increase in net deferred tax assets   $ 54,200      
Radiology Services Medical Group [Member]          
Income Tax [Line Items]          
Capital losses incurred     $ 45,100    
Anesthesiology Services Medical Group [Member]          
Income Tax [Line Items]          
Capital losses incurred     $ 1,570,000    
Earliest Tax Year [Member]          
Income Tax [Line Items]          
Federal and state income tax examinations   2015      
Latest Tax Year [Member]          
Income Tax [Line Items]          
Federal and state income tax examinations     2020    
2020 [Member]          
Income Tax [Line Items]          
Federal tax rate   35.00%      
Scenario, Forecast [Member]          
Income Tax [Line Items]          
Increase (decrease) in uncertain tax position $ 2,000        
Minimum [Member]          
Income Tax [Line Items]          
Expiration period of operating loss carryforwards   2022      
Maximum [Member]          
Income Tax [Line Items]          
Expiration period of operating loss carryforwards   2041