Share-based Compensation Arrangement by Share-based Payment Award, Annual Vesting Percentage

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Number of Installments

+ References

No definition available.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (i)

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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

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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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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- Definition

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(3)

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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

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-Publisher FASB

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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

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

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

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

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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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).

+ References

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-Publisher FASB

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-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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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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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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-Paragraph 2

-Subparagraph (d)(2)

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- Definition

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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-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

+ References

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- Definition

Number of options outstanding, including both vested and non-vested options.

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- Definition

Weighted average remaining contractual term for option awards outstanding, 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 floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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- Definition

The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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- Definition

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

+ References

No definition available.

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- Definition

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

+ References

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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Equity-Based Compensation - Text (Details) (USD $)	12 Months Ended
Equity-Based Compensation - Text (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Details
Award vesting period	4 years
Weighted-average fair value on the date of grant of stock options granted	$ 5.91	$ 5.78	$ 5.47
Restricted Stock - annual vesting percentage	25.00%
Stock-based compensation expense for non-vested equity-based compensation	$ 2,700,000
End of period, share price	$ 9.53us-gaap_SharePrice
Stock based compensation expense, recognition period	15 months
Minimum
Share-based Compensation Details
Award vesting period	1 year
2010 Plan [Member]
Share-based Compensation Details
Years of annual installments in which stock options become exercisable	4 years
Number of shares authorized	1,300,000
Number of shares available for grant	628,000
Options exercised (in shares)	(5,000)	(2,875)	(20,750)
Intrinsic value of shares exercised	18,000	17,000	55,000
Number of options outstanding and exercisable (in shares)	631,846	660,471	461,346	265,500
Aggregate intrinsic value	0
Weighted average remaining contractual life	9 years 6 months
Restricted stock grants (in shares)	11,700
Restricted stock shares released (weighted-average fair value)	0
Restricted stock cancelled or forfeited (weighted-average fair value)	0
Restricted stock grants (weighted-average fair value)	$ 16.93
2010 Plan [Member] \| Minimum
Share-based Compensation Details
Award vesting period	1 year
2010 Plan [Member] \| Maximum
Share-based Compensation Details
Award vesting period	15 years
Equity Plan [Member]
Share-based Compensation Details
Options exercised (in shares)	(601,800)	(107,775)	(574,353)
Intrinsic value of shares exercised	5,800,000	1,600,000	7,400,000
Number of options outstanding and exercisable (in shares)	1,868,597	2,472,147	2,584,547	3,175,075
Aggregate intrinsic value	8,809,260
Weighted average remaining contractual life	3 years 11 months
Equity Plan [Member] \| Minimum
Share-based Compensation Details
Years of annual installments in which stock options become exercisable	3 years
Award vesting period	1 year
Equity Plan [Member] \| Maximum
Share-based Compensation Details
Years of annual installments in which stock options become exercisable	4 years
Award vesting period	15 years
1991 Plan Options [Member]
Share-based Compensation Details
Options exercised (in shares)	0	0	0
Number of options outstanding and exercisable (in shares)	135,060
Aggregate intrinsic value	$ 500,000
Weighted average remaining contractual life	0 years 6 months
1991 Plan Options [Member] \| Range of Exercise Prices, $2.88 – $6.00 [Member]
Share-based Compensation Details
Number of options outstanding and exercisable (in shares)	127,000
Exercise price range, lower limit	$ 2.88
Exercise price range, upper limit	$ 6.00
1991 Plan Options [Member] \| Exercise Price, $16.19 [Member]
Share-based Compensation Details
Number of options outstanding and exercisable (in shares)	8,000
Exercise price range, lower limit	$ 16.19
Exercise price range, upper limit	$ 16.19
1991 Restricted Stock Plan [Member]
Share-based Compensation Details
Number of shares authorized	800,000
Number of shares available for grant	95,000
Restricted stock grants (in shares)	125,200	98,000	127,500
Restricted stock shares released (weighted-average fair value)	193,652	106,626	90,626
Restricted stock cancelled or forfeited (weighted-average fair value)	39,838	1,600	7,500
Restricted stock grants (weighted-average fair value)	$ 16.62	$ 20.68	$ 15.04