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The percentage of fair market value at which employees acquire shares under Employee Stock Purchase Plan on one specified date.

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Liability related to performance shares that will be settled in company common stock in future periods.

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Represents the period within which stock options will be exercised.

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As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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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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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.

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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 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 number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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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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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Stock Compensation (Details) (USD $)	6 Months Ended			6 Months Ended
Stock Compensation (Details) (USD $)	Jun. 30, 2013 Employee Stock Purchase Plan [Member]	Jun. 30, 2013 LTEIP Restricted Stock [Member]	Dec. 31, 2012 LTEIP Restricted Stock [Member]	Jun. 30, 2013 Stock Award Plan [Member]	Jun. 30, 2012 Stock Award Plan [Member]	Jun. 30, 2013 Stock Options [Member]	Jun. 30, 2013 Retention Awards [Member]	Jun. 30, 2013 Retention Awards [Member] Minimum [Member]	Jun. 30, 2013 Retention Awards [Member] Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number Of Days Average Share Price Used For Award Conversion	5 days
Percentage of fair market value at which employees acquire shares under Employee Stock Purchase Plan (in hundredths)	85.00%
Share-based Compensation Expense				$ 429,000	$ 375,000
Compensation expense not yet recognized				1,524,000
Period for recognition total compensation cost not yet recognized				2 years 4 months 20 days
Award Requisite Service Period								11 months	36 months
Proceeds from Stock Options Exercised						183,000
Portion of options vesting each year (in hundredths)						33.00%
Period within which stock options will be exercised						10 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Non-vested at Beginning of Year (in shares)		32,447					11,150
Granted/Settled (in shares)		68,699					33,950
Vested (in shares)		(72,621)					0
Forfeited (in shares)		0					(800)
Non-vested at End of Period (in shares)		28,525					44,300
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Non-vested at Beginning of Year (in dollars per share)		$ 3.43					$ 10.28
Granted (in dollars per share)		$ 9.83					$ 8.76
Vested (in dollars per share)		$ 6.97					$ 0
Forfeited (in dollars per share)		$ 0					$ 10.57
Non-vested at End of Period (in dollars per share)		$ 9.83					$ 9.07
Long Term Executive Incentive Program [Abstract]
Performance Shares Related Liability		$ 740,000	$ 1,028,000
Number of options, shares [Roll Forward]
Outstanding at beginning of period (in shares)						143,817
Granted (in shares)						0
Exercised (in shares)						(21,667)
Forfeited (in shares)						0
Expired (in shares)						(15,000)
Outstanding at end of period (in shares)						107,150
Exercisable at end of period (in shares)						103,816
Weighted Average Exercise Price [Roll Forward]
Outstanding at start of period (in dollars per share)						$ 9.95
Granted (in dollars per share)						$ 0
Exercised (in dollars per share)						$ 8.44
Forfeited (in dollars per share)						$ 0
Expired (in dollars per share)						$ 8.93
Outstanding at end of period (in dollars per share)						$ 10.40
Exercisable at end of period (in dollars per share)						$ 10.45