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Note 14 - Additional Cash Flow Information - Additional Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Interest paid	$ 22,069	$ 21,700	$ 14,274
Income taxes paid	39,824	20,127	18,832
Transfers of Loans Not Covered by FDIC Loss Share to Foreclosed Assets Held-for-sale [Member]
Real Estate Owned, Transfer to Real Estate Owned	17,213	16,456	5,145
Transfers of Loans Acquired Covered by FDIC Loss Share to Foreclosed Assets Covered by FDIC Loss Share [Member]
Real Estate Owned, Transfer to Real Estate Owned		4,349	5,536
Transfers of Foreclosed Assets Covered by FDIC Loss Share to Foreclosed Assets Held for Sale [Member]
Real Estate Owned, Transfer to Real Estate Owned		13,895
Transfers of Loans Acquired Covered by FDIC Loss Share, to Loans Acquired not Covered by FDIC Loss Share [Member]
Real Estate Owned, Transfer to Real Estate Owned		88,922
Transfers of Premises Held-for-sale to Foreclosed Assets Held-for-sale [Member]
Real Estate Owned, Transfer to Real Estate Owned	$ 652	$ 6,126

X

- Definition

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
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