XML 35 R42.htm IDEA: XBRL DOCUMENT v2.4.0.6

Stock-Based Compensation (Table)

12 Months Ended

Dec. 31, 2011

Stock based compensation

Stock-based compensation

Year Ended December 31,	2011				2010				2009
(Dollars in thousands)
Stock option awards	$	9,549			$	7,179			$	7,024
Restricted stock unit awards		10,037				10,056				8,640
Deferred compensation matching stock unit awards		12				165				151
Awards under employee stock purchase plan		255				314				241
Awards under Non-Employee Director compensation plan		330				330				306
Total stock-based compensation, before income taxes		20,183				18,044				16,362
Income tax benefit		(7,581	)			(6,812	)			(6,154	)
Total stock-based compensation expense, net of income taxes	$	12,602			$	11,232			$	10,208

Stock-based compensation, allocation by financial statement line item

December 31,		2011			2010			2009
(Dollars in thousands)
Selling, general and administrative expense	$	17,538		$	16,009		$	14,512
System operations		2,645			2,035			1,850
Total stock-based compensation expense	$	20,183		$	18,044		$	16,362

Common Shares | 2005 Long-Term Incentive Plan

Stock based compensation

Stock-based compensation, fair value assumptions

	2011		2010		2009
Expected life	4.3 years		0.9-8.0 years		3.9 years
Expected volatility	43.4%-44.8%		26.9%-43.9%		40.3%-44.2%
Dividend yield	0%		0%		0%
Risk-free interest rate	0.7%-2.0%		0.4%-3.1%		1.2%-2.2%
Estimated annual forfeiture rate	0.0%-7.8%		0.0%-8.4%		6.9%

Summary of stock options

														Weighted
														Average
					Weighted			Weighted						Remaining
					Average			Average			Aggregate			Contractual
	Number of				Exercise			Grant Date			Intrinsic			Life
	Options				Price			Fair Value			Value			(in years)
Outstanding at December 31, 2008		1,626,000			$	57.15
(624,000 exercisable)						51.56
Granted		748,000				34.21		$	11.75
Exercised		(181,000	)			34.01					$	821,000
Forfeited		(130,000	)			47.98
Expired		(34,000	)			56.84
Outstanding at December 31, 2009		2,029,000			$	51.37
(1,046,000 exercisable)						54.40
Granted		831,000				41.98		$	13.75
Exercised		(317,000	)			38.60					$	1,555,000
Forfeited		(88,000	)			44.28
Expired		(193,000	)			61.50
Outstanding at December 31, 2010		2,262,000			$	49.12
(1,151,000 exercisable)					$	54.64
Granted		595,000				51.70		$	19.42
Exercised		(173,000)				37.50					$	2,099,000
Forfeited		(72,000)				45.97
Expired		(175,000)				57.05
Outstanding at December 31, 2011		2,437,000				50.10					$	4,423,000		6.9
(1,321,000 exercisable)						53.68					$	2,361,000		5.5

Summary of nonvested restricted stock units

	Number			Weighted Average Grant Date Fair Value
Nonvested at December 31, 2010	752,000			$	42.69
Granted	346,000				49.35
Vested	(189,000	)			55.93
Forfeited	(64,000	)			42.48
Nonvested at December 31, 2011	845,000			$	42.48

X

- Definition

Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits.

+ References

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

-Topic 718

-SubTopic 10

-Publisher FASB

-Number

-Article

-Subparagraph (h)(1)

-Name Accounting Standards Codification

-Paragraph 2

-Section 50

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.F)

-URI http://asc.fasb.org/extlink&oid=6793087&loc=d3e301413-122809



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph g(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901



Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F



Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph 64

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the changes in outstanding nonvested restricted stock units.

+ References

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

-Topic 718

-SubTopic 10

-Publisher FASB

-Number

-Article

-Subparagraph (c)(2)

-Name Accounting Standards Codification

-Paragraph 2

-Section 50

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

+ References

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

-Topic 718

-SubTopic 10

-Publisher FASB

-Number

-Article

-Subparagraph (c)(1)

-Name Accounting Standards Codification

-Paragraph 2

-Section 50

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

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

-Topic 718

-SubTopic 10

-Publisher FASB

-Number

-Article

-Subparagraph (f)(2)

-Name Accounting Standards Codification

-Paragraph 2

-Section 50

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_ShareBasedCompensationAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration