Commitments and contingencies (Other details) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Western World Insurance Group, Inc
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	$ 3,186	$ 3,108

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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