Cash received for the exercise of stock option awards.

No definition available.

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- Definition

Share based compensation arrangement by share based payment award options vested and expected to vest percentage after one year.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award options vested and expected to vest percentage after three year.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award options vested and expected to vest percentage after two year.

+ References

No definition available.

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- Definition

Share based compensation number of deferrals.

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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.

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

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-Section F

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- Definition

Aggregate number of common shares reserved for future issuance.

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-Publisher FASB

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-Topic 210

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- Definition

Number of common stock held in a trust that has been set up specifically to accumulate stock for the sole purpose of distribution to participating employees but not yet earned.

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-Publisher FASB

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-Topic 718

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- Definition

The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

+ References

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- Definition

Amount of deferred tax expense from write-off of the deferred tax asset related to deductible stock options at exercise.

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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

Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

+ References

No definition available.

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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

+ References

No definition available.

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- Definition

The aggregate cash inflow comprised of the amount received from (a) employees to acquire the entity's shares under incentive awards, including stock option exercises and restricted stock arrangements, and (b) the excess tax benefit arising from such transactions.

+ References

No definition available.

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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.

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-Publisher FASB

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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.

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-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

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- Definition

Date the equity-based award expires, in CCYY-MM-DD format.

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-Paragraph 2

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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

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.

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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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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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-Name Regulation S-X (SX)

-Number 210

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- Definition

Value of forfeitures of stock or other type of equity issued of any equity-based compensation plan other than an employee stock ownership plan (ESOP).

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Share-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options exercised			10,900
Compensation expenses	$ 85,000	$ 87,000	$ 39,000	$ 152,000
Weighted-average period to be recognized			1 year 7 months 6 days
Deferred shares and held by the rabbi trust	184,511		184,511		184,036
Granted, Number of Shares			0
Compensation cost related to Nonvested awards not yet recognized	200,000		200,000
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares reserved for awards	800,000		800,000
Shares remaining to be issued	429,837		429,837
Restricted Stock [Member] \| Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation arrangement share based payment award vesting period			3 years
Time-based restricted stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expenses	100,000	100,000	100,000	100,000
Compensation cost expected to be recognized over period	500,000		500,000
Weighted-average period to be recognized			2 years
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares reserved for awards	300,000		300,000
Option issued under vest plan			50.00%
Option issued under vest plan and granted after 2 years			75.00%
Option issued under vest plan and granted after 3 years			100.00%
Estimated Forfeitures			0
Stock options exercised			10,900	400
Total intrinsic value of stock options			300,000	7,000
Cash received from stock options exercise			500,000	16,000
Excess tax benefits			100,000	1,000
Compensation expenses	0		0
Stock Options [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option issued under vest plan and expire			10 years
Stock Options [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option issued under vest plan and expire			5 years
Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares reserved for awards	900,000		900,000
Stock options exercised			9,250	1,250
Total intrinsic value of stock options			300,000	7,000
Excess tax benefits			100,000	0
LTIP expiry date			Apr. 17, 2018
Granted, Number of Shares			0
Cash received for exercise of stock options awards			400,000	100,000
Long Term Incentive Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares reserved for awards	100,000		100,000
Shares remaining to be issued	57,000		57,000
Long Term Incentive Stock Option [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option issued under vest plan and expire			10 years
Long Term Incentive Stock Option [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option issued under vest plan and expire			5 years
Performance-based restricted stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost expected to be recognized over period	4,700,000		4,700,000
Weighted-average period to be recognized			2 years
Performance-based compensation expense	800,000	700,000	1,300,000	1,200,000
Excess tax benefits from restricted share awards			0	0
Long Term Incentive Plan Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option issued under vest plan			50.00%
Option issued under vest plan and granted after 2 years			75.00%
Option issued under vest plan and granted after 3 years			100.00%
Estimated Forfeitures			$ 0
Granted, Number of Shares			0	8,000
Deferred Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of deferrals			2