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Segment Information - Selected Financial Data by Business Segment (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Segment Reporting Information [Line Items]      
Revenues $ 88,069 $ 96,948  
Income (loss) before income taxes 1,576 (8,374) $ (45,100)
Total assets 425,498   400,074
Insurance      
Segment Reporting Information [Line Items]      
Revenues 88,053 96,933  
Income (loss) before income taxes 2,968 (7,021)  
Total assets 381,852   354,008
Real estate and Corporate      
Segment Reporting Information [Line Items]      
Revenues 16 15  
Income (loss) before income taxes (1,392) $ (1,353)  
Total assets $ 43,646   $ 46,066