Statutory Financial Information	12 Months Ended
	Dec. 31, 2017
Statutory Accounting Practices [Abstract]
Statutory Financial Information	Statutory Financial InformationWNFIC maintains capital in excess of minimum statutory amount of $7.5 million as required by regulatory authorities. The statutory capital and surplus of WNFIC was $28.7 million as of December 31, 2017 and $23.5 million as of December 31, 2016. As of December 31, 2017 and 2016, WNFIC generated statutory net income of $4.8 million and $8.2 million, respectively.