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Subsequent Event - Additional Information (Detail) - USD ($)
$ in Millions
1 Months Ended
Apr. 23, 2019
Apr. 17, 2019
Oct. 03, 2018
Jun. 30, 2018
Mar. 03, 2017
Subsequent Event [Line Items]          
Line of Credit Facility, Maximum Borrowing Capacity     $ 6.6   $ 6.7
Allied Pacific of California [Member]          
Subsequent Event [Line Items]          
Equity Method Investment, Ownership Percentage       25.00%  
Five three one W college llc [Member] | Allied Pacific of California [Member]          
Subsequent Event [Line Items]          
Equity Method Investment, Ownership Percentage 50.00%        
Equity Method Investment, Aggregate Cost $ 16.2        
Five three one W college llc [Member] | Network Medical Management, Inc 'NMM' [Member] | Allied Pacific of California [Member]          
Subsequent Event [Line Items]          
Business Acquisition, Percentage of Voting Interests Acquired 25.00%        
Business Combination, Consideration Transferred $ 8.3        
Subsequent Event [Member] | Allied Pacific of California [Member] | Maximum [Member]          
Subsequent Event [Line Items]          
Line of Credit Facility, Maximum Borrowing Capacity   $ 40.0      
Subsequent Event [Member] | Allied Pacific of California [Member] | Minimum [Member]          
Subsequent Event [Line Items]          
Line of Credit Facility, Maximum Borrowing Capacity   10.0      
Subsequent Event [Member] | Network Medical Management, Inc 'NMM' [Member] | Maximum [Member]          
Subsequent Event [Line Items]          
Line of Credit Facility, Maximum Borrowing Capacity   20.0      
Subsequent Event [Member] | Network Medical Management, Inc 'NMM' [Member] | Minimum [Member]          
Subsequent Event [Line Items]          
Line of Credit Facility, Maximum Borrowing Capacity   $ 16.0