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Note 11 - Share Based Compensation and Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

										Weighted
						Weighted				Average
						Average				Remaining				Aggregate
						Exercise				Contractual				Intrinsic
Options		Shares				Price				Life (in Years)				Value
Balance of Outstanding Options at January 1, 2016			3,475,115			$	20.95
Granted			493,088				17.65
Exercised			(466,877	)			13.82
Forfeited			(11,500	)			25.55
Balance of Outstanding Options at December 31, 2016			3,489,826			$	21.42				5.86			$	36,573,365
Expected to vest after December 31, 2016			1,823,896			$	24.79				7.63			$	12,969,933
Vested and exercisable at December 31, 2016			1,608,248			$	17.48				3.80			$	23,198,547

Schedule of Nonvested Share Activity [Table Text Block]

						Weighted
						Average
		Number of				Grant Date
Non-vested Shares		Shares				Fair Value
Non-vested at January 1, 2016			1,919,873			$	12.30
Granted			493,088				6.54
Vested			(527,883	)			10.56
Forfeited			(3,500	)			9.24
Non-vested at December 31, 2016			1,881,578			$	11.28

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

						Weighted
						Average								Weighted
						Remaining				Aggregate				Average
						Contractual				Intrinsic				Grant Date
Stock Awards and Units		Shares				Life (in Years)				Value				Fair Value
Outstanding Non-vested shares at January 1, 2016			483,335											$	24.73
Granted			268,890												17.57
Vested			(233,052	)											24.32
Forfeited			−												−
Outstanding Non-vested at December 31, 2016			519,173				8.6			$	16,561,618			$	21.21
Expected to vest after December 31, 2016			516,649				8.6			$	16,481,103

X

- Definition

Tabular disclosure of the changes in outstanding nonvested shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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+ References

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