Segment Information - Selected Financial Data by Business Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Revenues	$ 102,115	$ 87,620	$ 301,817	$ 243,357
Income (loss) before income taxes	(327)	(4,524)	(39,306)	(3,030)
Total assets	458,535		458,535		$ 402,127
Insurance
Segment Reporting Information [Line Items]
Revenues	102,099	87,604	300,533	243,307
Income (loss) before income taxes	1,173	(3,156)	(36,280)	(166)
Total assets	416,182		416,182		373,475
Real estate and Corporate
Segment Reporting Information [Line Items]
Revenues	16	16	1,284	50
Income (loss) before income taxes	(1,500)	$ (1,368)	(3,026)	$ (2,864)
Total assets	$ 42,353		$ 42,353		$ 28,652