XML 155 R144.htm IDEA: XBRL DOCUMENT v3.10.0.1
REVENUE FROM CONTACTS WITH CUSTOMERS - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2018
Dec. 31, 2017
Revenue from External Customer [Line Items]      
Revenue from Contract with Customer, Excluding Assessed Tax $ 151,044 $ 449,464  
10-year agreement      
Revenue from External Customer [Line Items]      
Contract liability 2,200 2,200 $ 2,400
Decrease in Contract with Customer, Liability 100 200  
Contract with Customer, Liability, Revenue Recognized $ 100 200  
Insurance commissions [Member]      
Revenue from External Customer [Line Items]      
Revenue from Contract with Customer, Excluding Assessed Tax   $ 2,400