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Note 14 - Additional Cash Flow Information - Company Acquired Assets and Assumed Liabilities Under Purchase Method (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill	$ 348,505	$ 327,686
Citizens, Liberty Community, First Metropolitan, Delta Trust Acquisitions, and Ozark [Member]
Assets acquired	585,500	2,996,228	$ 417,386
Liabilities assumed	530,695	2,680,140	378,967
Purchase price	76,300	535,003	67,441
Goodwill	$ 21,495	$ 218,915	$ 29,022

X

- 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.

+ References

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-Publisher FASB
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-SubTopic 30
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Amount of assets acquired at the acquisition date.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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