General (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended	1 Months Ended
May 01, 2014	Jan. 31, 2015
Business Acquisition [Line Items]
Stock split conversion ratio	3
Latin American Underwriters Holdings Ltd. (LAU)
Business Acquisition [Line Items]
Business acquisition, consideration transferred		$ 5,105
Goodwill acquired during the period		2,467
Intangible assets acquired during the period		3,610
Useful life of intangible assets		5 years
Contingent consideration		$ 1,000

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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