Segment Information - Summary of Segment Assets Reconciled to Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Total assets	$ 888,385	$ 802,609
Consolidation, Eliminations [Member]
Segment Reporting Information [Line Items]
Total assets	(30,581)	(15,060)
Insurance Operations [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total assets	734,614	663,280
Real Estate Operations [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total assets	96,831	93,727
Corporate and Other [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total assets	$ 87,521	$ 60,662