v2.3.0.15

Stock Based Compensation (Summary Of Shares Issuances Subject To Restrictions, Restricted Share Units And Performance Units) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended	9 Months Ended				12 Months Ended
	Dec. 31, 2007	Sep. 30, 2011 Share Issuances Subject To Restrictions [Member]	Sep. 30, 2011 Restricted Share Units [Member]		Sep. 30, 2011 Performance Units [Member]	Dec. 31, 2010 Performance Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares, issued	143,453
Number of restricted shares issued	94,610
Outstanding as of January 1, 2011, Number of Shares (Units)		23,653	1,016,000		895,333
Granted, Number of Shares (Units)			954,848		1,682,196
Vested and allotted, Number of Shares (Units)		(23,653)	(144,250)	[1]
Forfeited, Number of Shares (Units)			(206,757)		(101,314)
Outstanding as of September 30, 2011, Number of Shares (Units)			1,619,841		2,476,215	895,333
Expected to vest, Number of Shares			1,389,310		2,209,662
Outstanding as of January 1, 2011, Weighted Average Grant Date Fair Value		$ 14.04	$ 13.61		$ 15.38
Granted, Weighted Average Grant Date Fair Value			$ 16.27		$ 15.05
Vested and allotted, Weighted Average Grant Date Fair Value		$ 14.04	$ 10.58	[1]
Forfeited, Weighted Average Grant Date Fair Value			$ 13.67		$ 15.90
Outstanding as of September 30, 2011, Weighted Average Grant Date Fair Value			$ 15.44		$ 15.14	$ 15.38
Outstanding as of January 1, 2011, Maximum Shares Eligible to Receive					3,544,602	1,343,000
Granted, Maximum Shares Eligible to Receive					2,346,995
Vested and allotted, Maximum Shares Eligible to Receive
Forfeited, Maximum Shares Eligible to Receive					(145,393)
Outstanding as of September 30, 2011, Maximum Shares Eligible to Receive					3,544,602	1,343,000
Unrecognized share-based compensation costs			$ 16,228		$ 24,400
Weighted average remaining requisite vesting period (years)			2.87		1.92
Minimum vesting schedule, years			1		0.5
Maximum vesting schedule, years			4		3
Vested RSU against which shares to be issued			48,000
[1] Vested RSUs include 48,000 RSUs, the shares in respect of which will be issued on December 31, 2012.

X

- Definition

The number of shares issued (subject to restriction on its transferability linked to continued employment with the Company) as [noncash or part noncash] consideration for a business or asset acquired. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Represents the maximum number of shares which the employer would have been required to issue upon the satisfaction of the performance condition, had these been not forfeited in the current reporting period.

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Represents the maximum number of shares to be issued to the employee, against the performance awards granted during the reporting period, upon the fulfillment of the performance condition.

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- Definition

As of the balance-sheet date, the aggregate unrecognized cost of share-based awards made to employees under share-based award plans other than a stock option plan that have yet to vest.

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The weighted average period over which unrecognized compensation is expected to be recognized for share-based awards made to employees under share-based award plans other than a stock option plan, using a decimal to express in number of years.

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Represents the maximum number of shares to be issued to the employee against the outstanding performance awards, upon the fulfillment of performance condition.

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Represents the maximum number of shares which the employer would have issued upon the satisfaction of the maximum level specified performance target.

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- Definition

As of the balance sheet date, the number of shares expected to be issued in future for awards (other than stock options) expected to vest.

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Maximum vesting period (in years) for share based awards other than stock options.

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Minimum vesting period (in years) for share based awards other than stock options.

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- Definition

It represents the number of restricted stock units which have vested but are yet to be issued due to post vesting restriction.

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- Definition

The number of shares issued as [noncash or part noncash] consideration for a business or asset acquired. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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- Definition

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

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- Definition

The 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 during the reporting period as a result of the occurrence of a terminating event specified in the contractual agreement of the plan.

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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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- Definition

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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- Definition

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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- Definition

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

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- Definition

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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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