Number of Equal Successive Installments for Vesting of Stock Awards

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- Definition

Number of shares reserved for issuance under equity instrument agreements awarded that validly exist and are outstanding, including vested instruments.

+ References

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- Definition

Shares Deregistered Available for Issuance

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- Definition

Number of shares issued during the period from a dividend reinvestment and stock purchase plan (DRSPP). A dividend reinvestment and stock purchase plan allows the shareholders to reinvest dividends paid to them by the entity on new issues of stock by the entity and to purchase additional shares.

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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

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-SubTopic 10

-Section 50

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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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.

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- Definition

Amount of cash inflow from realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.

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-Section 55

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- Definition

The total cash inflow associated with the amount received from holders to acquire the entity's shares under incentive and share awards, including stock option exercises. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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-Glossary Financing Activities

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- Definition

Percentage of vesting of share-based compensation awards.

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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).

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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).

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- Definition

The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

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- Definition

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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- 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.

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- Definition

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

+ References

No definition available.

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- Definition

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

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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-Section 45

-Paragraph 28

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Equity Plans (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Jan. 27, 2015	Jan. 02, 2015 vesting_installment	Aug. 04, 2014	Apr. 14, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation costs charged to income:	$ 399	$ 244
Excess tax benefits realized from share options exercised and stock issuance:	526	280
Proceeds from the exercise of stock options and similar instruments:	433	476
Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining shares available for issuance under the Incentive Plan (shares)	1,047,422
Shares issuable upon exercise of Incentive Plan awards (shares)	257,917
Employee Stock Purchase Plan (ESPP)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation costs charged to income:	76	72
Proceeds from the exercise of stock options and similar instruments:	433	406
Unrecognized compensation costs	51
Purchase price of common stock under ESPP (percent)	85.00%
Maximum percentage of base compensation employees can designate for stock purchases under ESPP (percent)	10.00%
Plan expense	39	36
Dividend Reinvestment and Stock Purchase Plan (DRSPP)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from the exercise of stock options and similar instruments:	0	26
Number of shares authorized for issuance under the plan (shares)	3,000,000
Number of shares issued under the DRSPP (shares)		875
Restricted stock and deferred restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation costs charged to income:	323	172
Excess tax benefits realized from share options exercised and stock issuance:	526	221
Unrecognized compensation costs	1,988
Recognition period for unrecognized compensation cost	1 year 2 months 19 days
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Excess tax benefits realized from share options exercised and stock issuance:	0	59
Proceeds from the exercise of stock options and similar instruments:	$ 0	$ 44
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity instruments granted (shares)			6,639	12,271
Number of equal successive installments for vesting of stock awards (vesting installments)				3
Grant date fair value of equity instruments granted (usd per share)			$ 34.36	$ 29.83
Common Stock \| Employee Stock Purchase Plan (ESPP)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance under the plan (shares)	400,000
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Deregistered (in shares)						2,993,744
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target vesting percentage					0.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target vesting percentage					150.00%
Executive Officer [Member] \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity instruments granted (shares)			3,252
Grant date fair value of equity instruments granted (usd per share)			$ 34.36