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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Subparagraph (SAB TOPIC 14.F)
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Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements.

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Unrecognized cost of unvested share-based compensation awards.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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Gross number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Price of a single share of a number of saleable stocks of a company.

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Percentage of vesting of share-based compensation awards.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Purchase price of common stock expressed as a percentage of its fair value.

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Note 12 - Stock-based Compensation (Details Textual) - USD ($)		1 Months Ended					3 Months Ended				12 Months Ended
	Mar. 02, 2006	Mar. 31, 2015	Nov. 30, 2014	Mar. 31, 2014	May. 31, 2012	Nov. 30, 2010	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2011
Nonqualified Options [Member] \| The 2014 Stock Option Plan [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period											5 years
Nonqualified Options [Member] \| The 2014 Stock Option Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period											10 years
Nonqualified Options [Member] \| The 2014 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross											0
Share-based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period, Percentage											20.00%
Nonqualified Options [Member] \| Key Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross					104,000	50,000		9,500
Share-based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period, Percentage					20.00%	20.00%
Allocated Share-based Compensation Expense								$ 94,000
Nonqualified Options [Member] \| Annual Grant to Non-employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross									504
Allocated Share-based Compensation Expense							$ 70,000		$ 60,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Grants in Period							175
Restricted Stock [Member] \| The 2014 Stock Option Plan [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent	85.00%
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period, Percentage			20.00%
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			9,500								1,225
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 42.65								$ 57.27
Stock Award [Member] \| The 2014 Stock Option Plan [Member] \| Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		1,225		3,024
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value		$ 57.27		$ 19.88
Stock Award [Member] \| Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross										5,000
Allocated Share-based Compensation Expense										$ 179,000
Performance Based Variable Nonqualified Stock Options [Member] \| Key Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross						64,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage						20.00%
Performance Based Variable Nonqualified Stock Options [Member]
Share-based Compensation Arrangement By Share-based Payment Award, Performance Awards Earned														4,442
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period														59,558
The 2014 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant											358,000
The 2006 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	750,000
Amortization, Next Year [Member]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized											$ 167,000
Amortization Year 2 [Member]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized											109,000
Amortization, Year 3 [Member]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized											$ 68,000
Diluted [Member]
Allocated Share-based Compensation Expense, Impact on Earnings Per Share													$ 0.02
Basic [Member]
Allocated Share-based Compensation Expense, Impact on Earnings Per Share													$ 0.03
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross											0	0	35,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value											$ 274,000	$ 263,000	$ 346,000
Allocated Share-based Compensation Expense											267,000	270,000	317,000
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense											$ 103,000	$ 106,000	123,000
Allocated Share-based Compensation Expense, Impact on Earnings Per Share											$ 0.02	$ 0.02
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized											$ 344,000		$ 518,000
Share Price											$ 27.59
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value													$ 5.13
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value												$ 6.34	$ 5.92
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value											$ 940,043	$ 1,355,000	$ 53,000
Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options											$ 236,000	$ 846,000	$ 46,000