Segment Information - Selected Financial Data by Business Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Revenues	$ 80,631	$ 67,120	$ 155,737	$ 129,662
Income (loss) before income taxes	690	3,723	1,494	4,270
Total assets	386,975		386,975		$ 328,445
Insurance
Segment Reporting Information [Line Items]
Revenues	80,614	67,105	155,703	129,632
Income (loss) before income taxes	1,438	4,441	2,990	5,679
Total assets	361,879		361,879		302,529
Real estate and Corporate
Segment Reporting Information [Line Items]
Revenues	17	15	34	30
Income (loss) before income taxes	(748)	$ (718)	(1,496)	$ (1,409)
Total assets	$ 25,096		$ 25,096		$ 25,916