XML 45 R52.htm IDEA: XBRL DOCUMENT v2.4.0.6

Share Based Compensation Plan (Tables)

12 Months Ended

Dec. 31, 2012

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Fair value of liability cash-settled stock appreciation rights

(in millions)		2012				2011				2010
Balance at January 1		$	2.2			$	0.8			$	0.2
Compensation charge			5.8				1.4				0.6
Cash paid			(6.7	)			0.0				0.0
Balance at December 31		$	1.3			$	2.2			$	0.8

LTIP [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Assumptions used in the Monte Carlo model

		2012				2011				2010
Dividend yield			0.0	%			0.0	%			0.5	%
Volatility			0.0	%			53.5	%			69.0	%
Risk free interest rate			0.36	%			0.36	%			1.05	%

Stock Options Plan [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Assumptions used to determine the fair value of options

		2012				2011				2010
Dividend yield			0.0	%			0.2	%			1.0	%
Expected life			5 years				5 years				5 years
Volatility			60.1	%			78.3	%			82.3	%
Risk free interest rate			0.43	%			1.22	%			1.36	%

Summary of transactions of the Company's stock option plans

		Number of Options				Weighted Average Exercise Price				Weighted Average Fair Value
Outstanding at December 31, 2011			1,229,220			$	5.44
Granted – at discount			75,932			$	0.00			$	21.98
– at market value			31,012			$	29.56			$	16.70
Exercised			(325,879	)		$	3.80
Forfeited			(9,044	)		$	10.00
Outstanding at December 31, 2012			1,001,241			$	6.27

Summary of information about options outstanding

Range of Exercise Price		Number Outstanding				Weighted Average Remaining Life in Years				Weighted Average Exercise Price				Number Exercisable and Fully Vested				Weighted Average Remaining Life in Years				Weighted Average Exercise Price
$0 - $5			561,811				7.01			$	0.59				128,617				6.04			$	0.69
$5 - $10			20,654				2.71			$	9.93				20,654				2.71			$	9.93
$10 - $15			355,233				2.17			$	11.27				0				0.00			$	0.00
$20 - $25			11,185				5.18			$	20.57				11,185				5.18			$	20.57
$25 - $30			50,978				7.84			$	28.59				11,666				4.14			$	27.09
$30 - $35			1,380				8.37			$	32.60				0				0.00			$	0.00
			1,001,241												172,122

Stock Equivalent Units [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary of information about options outstanding

Range of Exercise Price		Number Outstanding				Weighted Average Remaining Life in Years				Weighted Average Exercise Price				Number Exercisable and Fully Vested				Weighted Average Remaining Life in Years				Weighted Average Exercise Price
$0 - $5			529,142				7.64			$	0.21				94,210				6.23			$	1.17
$10 - $15			51,259				7.13			$	10.38				0				0.00			$	0.00
$25 - $30			43,427				8.31			$	27.52				0				0.00			$	0.00
			623,828												94,210

SEUs assumptions used in Monte Carlo model

		2012				2011				2010
Dividend yield			0.0	%			0.0	%			0.5	%
Volatility			43.8	%			64.2	%			78.9	%
Risk free interest rate			0.36	%			0.36	%			1.05	%

Summarizes the transactions of the SEUs

		Number of SEUs				Weighted Average Exercise Price				Weighted Average Fair Value
Outstanding at December 31, 2011			864,086			$	2.30
Granted – at discount			98,128			$	0.00			$	29.73
– at market value			7,293			$	29.56			$	15.20
Exercised			(345,679	)		$	1.05
Outstanding at December 31, 2012			623,828			$	2.95

X

- Definition

Schedule of fair value of liability cash settled stock appreciation rights.

+ References

No definition available.

+ Details

Name:	iosp_ScheduleOfFairValueOfLiabilityCashSettledStockAppreciationRightsTableTextBlock
Namespace Prefix:	iosp_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of schedule of share based payment award stock appreciation rights valuation assumptions.

+ References

No definition available.

+ Details

Name:	iosp_ScheduleOfShareBasedPaymentAwardStockAppreciationRightsValuationAssumptionsTableTextBlock
Namespace Prefix:	iosp_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Schedule of share based payment award valuation assumptions.

+ References

No definition available.

+ Details

Name:	iosp_ScheduleOfShareBasedPaymentAwardValuationAssumptionsTableTextBlock
Namespace Prefix:	iosp_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of share-based compensation plans that may be presented in a single table for outstanding, vested and expected to vest, and exercisable awards. The information that may be disclosed in this table may include, but is not limited to, number of shares, weighted average exercise price, weighted average remaining contractual life, and aggregate intrinsic value.

+ References

No definition available.

+ Details

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

X

- Definition

Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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



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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph 64

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph f

-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_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock
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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)

-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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)(2)

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