Mergers and Acquisitions - Pro Forma Information (Details) - Talmer Bank - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Business Acquisition
Net interest and other income	$ 168,107	$ 157,932
Net Income	$ 47,604	$ 39,028
Earnings per share:
Basic (in dollars per share)	$ 0.67	$ 0.56
Diluted (in dollars per share)	$ 0.67	$ 0.55

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The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)-(3)
-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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