Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Acquired Intangible Assets [Line Items]
Cost and Net Value	$ 19,000	$ 19,000
Cost	25,800	51,300
Accumulated Amortization	2,721	27,693
Net Value	4,100	4,600
Net Value	23,079	23,607
Trademarks
Acquired Intangible Assets [Line Items]
Cost and Net Value	4,800	4,800
Trade names
Acquired Intangible Assets [Line Items]
Cost and Net Value	4,200	4,200
State insurance licenses
Acquired Intangible Assets [Line Items]
Cost and Net Value	$ 10,000	$ 10,000
Customer relationships
Acquired Intangible Assets [Line Items]
Useful Life	15 years	15 years
Cost	$ 5,300	$ 5,300
Accumulated Amortization	2,369	2,017
Net Value	$ 2,931	$ 3,283
Agent Relationships
Acquired Intangible Assets [Line Items]
Useful Life	10 years	10 years
Cost	$ 900	$ 900
Accumulated Amortization	179	90
Net Value	$ 721	$ 810
Trade names
Acquired Intangible Assets [Line Items]
Useful Life	7 years	7 years
Cost	$ 600	$ 600
Accumulated Amortization	173	86
Net Value	$ 427	514
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