The exercise price of options as percentage of the market value on purchase date that participants pay for shares.

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The term of equity-based compensation awards over which such awards remain valid.

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No definition available.

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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.

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-Name Staff Accounting Bulletin (SAB)

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- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

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Unrecognized cost of unvested share-based compensation awards.

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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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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.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting 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 number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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

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No definition available.

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Stock Based Compensation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended		3 Months Ended
	Feb. 19, 2015	Feb. 20, 2014	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding (in shares)			3,744,562us-gaap_CommonStockSharesOutstanding		3,730,877us-gaap_CommonStockSharesOutstanding
Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	3,458	4,050
Non-vested equity instruments other than options, shares [Roll Forward]
Nonvested at beginning of period (in shares)			34,965
Granted (in shares)			13,685
Vested (in shares)			(15,383)
Forfeited (in shares)			0
Nonvested at end of period (in shares)			33,267
Non-vested equity instruments other than option, weighted average fair value [Roll Forward]
Nonvested at beginning of period (in dollars per share)			$ 13.11
Granted (in dollars per share)			$ 17.20
Vested (in dollars per share)			$ 13.23
Nonvested at end of period (in dollars per share)			$ 14.74
Restricted Shares [Member] \| Non employee Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense			$ 59	$ 64
Restricted Shares [Member] \| Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense			40	37
Total unrecognized compensation cost			309
Recognition period for total unrecognized compensation costs	33 months		3 years
Performance based stock rights [Member]
Non-vested equity instruments other than options, shares [Roll Forward]
Nonvested at beginning of period (in shares)			35,141
Granted (in shares)			10,227
Vested (in shares)			0
Forfeited (in shares)			(11,925)
Nonvested at end of period (in shares)			33,443
Non-vested equity instruments other than option, weighted average fair value [Roll Forward]
Nonvested at beginning of period (in dollars per share)			$ 13.12
Granted (in dollars per share)			$ 17.20
Forfeited (in dollars per share)			$ 12.08
Nonvested at end of period (in dollars per share)			$ 14.74
Performance based stock rights [Member] \| Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost			160
Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)			350,000
Stock Incentive Plan [Member] \| Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of options as percentage of market price (in hundredths)			100.00%
Award vesting period			3 years
Award term			10 years
Granted (in shares)			0
Outstanding (in shares)			0
Stock Incentive Plan [Member] \| Restricted Shares [Member] \| Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	10,227	10,570
Stock Incentive Plan [Member] \| Performance based stock rights [Member] \| Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	10,227	10,746
Compensation expense			$ 32	$ 26