Annual Increments To Be Vested In Common Stock Units

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- Definition

The expense resulting from the benefit (short-fall) of tax deductions from share-based compensation, in excess of grant-date fair value.

+ References

No definition available.

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- Definition

Maximum period of common stock granted

+ References

No definition available.

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- Definition

The number of officers receiving a share-based compensation award.

+ References

No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
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-Subparagraph (SAB Topic 14.F)
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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Glossary Financing Activities
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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

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).

+ References

+ Details

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- Definition

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).

+ References

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- Definition

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.

+ References

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- Definition

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.

+ References

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

Number of share options (or share units) exercised during the current period.

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-Topic 210
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- Definition

The noncash expense that accounts for the value of stock or unit options distributed to employees as compensation.

+ References

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-Publisher FASB
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-Topic 230
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Note 5 - Stock-based Compensation (Details Textual)	1 Months Ended		3 Months Ended			6 Months Ended	9 Months Ended		12 Months Ended
Note 5 - Stock-based Compensation (Details Textual)	Dec. 31, 2015 shares	Dec. 31, 2014 shares	Sep. 30, 2016 USD ($) shares	Mar. 31, 2016 shares	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) shares	Sep. 30, 2016 USD ($) $ / shares shares	Sep. 30, 2015 USD ($) $ / shares shares	Dec. 31, 2013 shares
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period \| shares							88,693	72,900
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value \| $ / shares							$ 30.37	$ 28.11
Number of Officers Receiving Award	7	7							8
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Stock or Unit Option Plan Expense			$ 1,200,000		$ 1,200,000		$ 3,300,000	$ 3,400,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized			$ 6,900,000			$ 6,900,000	$ 6,900,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition							2 years 36 days
Performance TSR Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period \| shares	61,209	60,456							119,840
Performance EPS Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period \| shares	57,409	57,642							116,186
2005 Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant \| shares			3,716,379			3,716,379	3,716,379
Additional Paid-in Capital [Member]
Benefit (Shortfall) of Tax Deductions from Share-based Compensation			$ 140,000
Allocated Share-based Compensation Expense			$ 0		0		$ 0	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross \| shares							0	0
Maximum Period Of Common Stock Granted						10 years
Annual Increments To Be Vested In Common Stock Units			20.00%			20.00%	20.00%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period \| shares				2,110			2,110	147,350
Proceeds from Stock Options Exercised							$ 49,000	$ 3,433,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value							9,000	1,300,000
Benefit (Shortfall) of Tax Deductions from Share-based Compensation					$ 17,000		$ (3,366,000)	$ (5,602,000)