Reinsurance Recoverables (Detail) - USD ($) $ in Thousands		Dec. 31, 2019		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Insurance [Abstract]
Reinsurance recoverables on paid losses		$ 98,100		$ 63,900
Ceded outstanding loss and LAE	[2]	1,583,900	[1]	1,857,400	$ 1,650,100	$ 1,236,200
Total		$ 1,681,962		$ 1,921,278

[1] Includes unallocated LAE, which aggregate to 1.1 percent of gross loss and LAE reserves as of December 31, 2019. Net loss and LAE reserves by component are shown in the preceding tables, and consolidated gross loss and LAE reserves is presented in the consolidated balance sheets.

[2] Reinsurance recoverables in this table include only ceded loss and LAE reserves.