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Intangible Assets (Detail) - USD ($)
$ in Thousands
12 Months Ended
Jan. 01, 2015
Dec. 31, 2015
Dec. 31, 2014
Acquired Intangible Assets [Line Items]      
Cost   $ 51,300 $ 19,350
Cost and Net Value   19,000 14,000
Accumulated Amortization   27,693 1,714
Net Value   4,600 3,600
Net Value   $ 23,607 17,636
Trademarks      
Acquired Intangible Assets [Line Items]      
Useful Life   Indefinite  
Cost and Net Value   $ 4,800 4,800
Trade names      
Acquired Intangible Assets [Line Items]      
Useful Life   Indefinite  
Cost and Net Value   $ 4,200 4,200
State insurance licenses      
Acquired Intangible Assets [Line Items]      
Useful Life Indefinite Indefinite  
Cost and Net Value   $ 10,000 $ 5,000
Customer relationships      
Acquired Intangible Assets [Line Items]      
Useful Life   15 years 15 years
Cost   $ 5,300 $ 5,300
Accumulated Amortization   2,017 1,664
Net Value   $ 3,283 $ 3,636
Agent Relationships      
Acquired Intangible Assets [Line Items]      
Useful Life   10 years  
Cost   $ 900  
Accumulated Amortization   90  
Net Value   $ 810  
Trade names      
Acquired Intangible Assets [Line Items]      
Useful Life   7 years  
Cost   $ 600  
Accumulated Amortization   86  
Net Value   514  
Non-compete agreements      
Acquired Intangible Assets [Line Items]      
Useful Life     2 years
Cost     $ 50
Accumulated Amortization     $ 50
Value of Business Acquired      
Acquired Intangible Assets [Line Items]      
Cost   25,500  
Accumulated Amortization   $ 25,500  
Value of Business Acquired | Maximum      
Acquired Intangible Assets [Line Items]      
Useful Life   1 year