Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

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Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Subsequent Events (Unaudited) - Additional Information (Detail) - USD ($)		12 Months Ended
	Jan. 29, 2016	Dec. 31, 2015	Dec. 31, 2014
Subsequent Event [Line Items]
Goodwill		$ 0	$ 0
James & Sons Insurance Company [Member]
Subsequent Event [Line Items]
Business acquisition date		Jan. 29, 2016
Subsequent [Member] \| James & Sons Insurance Company [Member]
Subsequent Event [Line Items]
Business acquisition, cash	$ 360,000
Goodwill	1,600,000
Business acquisition, total assets purchase	2,300,000
Business acquisition, company stock	$ 1,500,000