XML 27 R25.htm IDEA: XBRL DOCUMENT v2.4.1.9

Note 8 - Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

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

		Three Months Ended March 31,
		2015								2014
		Shares				Weighted-Average Exercise Price				Shares				Weighted-Average Exercise Price
Beginning balance			757,183			$	11.31				501,334			$	10.34
Issued			-				-				21,000				32.77
Exercised			(280,425	)			12.40				(19,027	)			13.13
Forfeited			-				-				(110	)			5.76
Expired			(8,007	)			16.90				(408	)			9.37
Ending balance			468,751			$	10.57				502,789			$	11.18

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

																	Weighted-Average
	Outstanding:								Stock Options				Weighted-Average				Remaining
	Range of Exercise Prices								Outstanding				Exercise Price				Contractual Life
	$	5.76			$	9.21				225,479			$	5.76				3.78
	$	9.22			$	15.47				173,907				11.83				2.83
	$	15.48			$	22.66				37,774				19.11				8.29
	$	22.67			$	32.36				31,591				27.69				4.26
										468,751			$	10.57				3.82

	Exercisable:								Stock Options				Weighted-Average
	Range of Exercise Prices								Exercisable				Exercise Price
	$	5.76			$	9.21				168,569			$	5.76
	$	9.22			$	15.47				166,467				11.88
	$	15.48			$	22.66				32,494				19.43
	$	22.67			$	32.36				21,191				25.40
										388,721			$	10.59

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

		Three Months Ended				Years Ended December 31,
		2015				2014				2013
Expected volatility		N/A					34.25	%			34.12	%
Weighted-Average volatility		N/A					34.25	%			34.12	%
Expected dividends			0.0	%			0.0	%			0.0	%
Expected term (in years)		N/A					9.4				7.5
Risk-free rate		N/A					2.26	%			1.31	%
Weighted-average fair value (grant date)		N/A				$	13.49			$	7.83

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

		Three Months Ended March 31,
		2015								2014
		Shares				Weighted-Average Grant Date Fair Value				Shares				Weighted-Average Grant Date Fair Value
Unvested at beginning			509,336			$	21.58				614,580			$	18.71
Issued			78,070				36.06				78,947				33.24
Forfeited			(84	)			25.91				(434	)			15.67
Vested			(193,338	)			20.66				(181,967	)			17.59
Unvested at end			393,984			$	24.90				511,126			$	21.36

X

- Details

Name:	us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

+ 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

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

+ 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

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ 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 (f)(2)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration