Subsequent Events (Details) - Subsequent Event - Grandpoint Capital, Inc. $ / shares in Units, $ in Millions	Jul. 02, 2018 USD ($) bank $ / shares shares
Subsequent Event [Line Items]
Number of regional offices \| bank	14
Equity issued, ratio	0.4750
Consideration paid	$ 629.0
Aggregate cash consideration payable	$ 28.0
Company's common stock value (usd per share) \| $ / shares	$ 38.15
Common Stock
Subsequent Event [Line Items]
Common stock issued as consideration (in shares) \| shares	15,758,089

Business Acquisition, Aggregate Cash For Fractional Shares and Consideration Payable

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- Definition

Business Acquisition, Equity Interest Issued or Issuable, Price Per Share

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- Definition

Number of shares of equity interests issued or issuable to acquire entity.

+ References

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- Definition

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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Represents the number of stores.

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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