XML 52 R40.htm IDEA: XBRL DOCUMENT v3.19.2
Business Combinations - Additional Information (Detail)
6 Months Ended
Jun. 30, 2019
USD ($)
acquisition
Jun. 30, 2018
USD ($)
acquisition
Mar. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Mar. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Business Acquisition [Line Items]            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets $ 175,170,000          
Number of acquisitions | acquisition 12 8        
Aggregate purchase price of acquisitions $ (6,500,000)          
Payments to Acquire Businesses, Gross $ 149,863,000          
Document Period End Date Jun. 30, 2019          
Goodwill, Acquired During Period $ 120,502,000          
Goodwill assigned 120,502,000          
Goodwill currently deductible for income tax purposes 96,500,000          
Goodwill related to the recorded earn-out payables 24,000,000.0          
Total revenues related to acquisitions 16,400,000          
Income before income taxes related to acquisitions 2,600,000          
Estimated acquisition earn-out payables 104,976,000 $ 52,540,000 $ 108,710,000 $ 89,924,000 $ 40,600,000 $ 36,175,000
Maximum Future Contingency payments Acquisitions 224,100,000          
Accounts payable            
Business Acquisition [Line Items]            
Estimated acquisition earn-out payables $ 12,800,000          
Purchased customer accounts            
Business Acquisition [Line Items]            
Weighted average life (years) 15 years          
Non-compete agreements            
Business Acquisition [Line Items]            
Weighted average life (years) 5 years          
Services            
Business Acquisition [Line Items]            
Goodwill, Acquired During Period $ 95,086,000          
Goodwill assigned 95,100,000          
National Programs            
Business Acquisition [Line Items]            
Goodwill, Acquired During Period 0          
Wholesale Brokerage            
Business Acquisition [Line Items]            
Goodwill, Acquired During Period 6,063,000          
Goodwill assigned 6,100,000          
Services [Member]            
Business Acquisition [Line Items]            
Goodwill, Acquired During Period 19,353,000          
Goodwill assigned 19,300,000          
Other non-current liability            
Business Acquisition [Line Items]            
Estimated acquisition earn-out payables $ 92,200,000          
Business Combinations - Asset Deals [Member]            
Business Acquisition [Line Items]            
Number of acquisitions | acquisition 11          
Other Acquisitions [Member]            
Business Acquisition [Line Items]            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets $ 23,743,000          
Goodwill assigned $ 22,111,000          
Business Combinations - Stock Deals [Member]            
Business Acquisition [Line Items]            
Number of acquisitions | acquisition 1