No definition available.

Name:	ttwo_ConvertibleNotesAbstract
Namespace Prefix:	ttwo_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of principal that will automatically become due and payable upon the default arising out of certain bankruptcy events.

+ References

No definition available.

+ Details

Name:	ttwo_DebtInstrumentConvertibleEventOfDefaultBankruptcyPercentageOfPrincipalPayableAndDue
Namespace Prefix:	ttwo_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

In the event of default, the minimum percentage of aggregate principal of notes held by a class of bondholders qualifying eligibility to declare principal of and accrued and unpaid interest due and payable.

+ References

No definition available.

+ Details

Name:	ttwo_DebtInstrumentConvertibleEventOfDefaultMinimumPercentageOfAggregatePrincipalHeldToFileNoticeToDeclareNotesDueAndPayable
Namespace Prefix:	ttwo_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the amount of debt issued as a result of the exercise of an over-allotment option by the underwriters.

+ References

No definition available.

+ Details

Name:	ttwo_DebtInstrumentExerciseOfOverAllotmentOptionByUnderwriters
Namespace Prefix:	ttwo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the amount of debt issued as a percentage of its par value.

+ References

No definition available.

+ Details

Name:	ttwo_DebtInstrumentIssuanceAsPercentageOfParValue
Namespace Prefix:	ttwo_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the amount of debt instrument for purchase of which overallotments option is granted to underwriters.

+ References

No definition available.

+ Details

Name:	ttwo_DebtInstrumentOverallotmentsOptionToUnderwriters
Namespace Prefix:	ttwo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the percentage of principal amount used in computation of the redemption price to be paid on conversion of convertible notes.

+ References

No definition available.

+ Details

Name:	ttwo_DebtInstrumentPercentageOfPrincipalAmountForComputationOfRedemptionPrice
Namespace Prefix:	ttwo_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the period of overallotments option to purchase debt instrument, granted to underwriters.

+ References

No definition available.

+ Details

Name:	ttwo_DebtInstrumentPeriodOfOverallotmentsOptionToUnderwriters
Namespace Prefix:	ttwo_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The principal amount of notes used as denominator for purposes of computing the conversion ratio of convertible debt.

+ References

No definition available.

+ Details

Name:	ttwo_DebtInstrumentPrincipalAmountDenominatorForConversionIntoCommonStock
Namespace Prefix:	ttwo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

For an unclassified balance sheet, the amount as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain which is allocated to liability component.

+ References

No definition available.

+ Details

Name:	ttwo_DeferredFinanceCostsGrossAllocatedToLiabilityComponent
Namespace Prefix:	ttwo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

+ References

No definition available.

+ Details

Name:	ttwo_DeferredFinanceCostsGrossRelatedToEquityComponent
Namespace Prefix:	ttwo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the borrowing rate at which loans are granted, used as an input to measure fair value.

+ References

No definition available.

+ Details

Name:	ttwo_FairValueInputsBorrowingRate
Namespace Prefix:	ttwo_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

This element represents one of the conditions for conversion of convertible notes at the option of the holder if the trading price falls below a defined percentage of the product of the last reported sale price of the entity's common stock and the applicable conversion rate on each day within the measurement period.

+ References

No definition available.

+ Details

Name:	ttwo_PercentageOnConversionPriceOfClosingPriceOfCommonStockTradedForAtLeast5ConsecutiveTradingDaysOutOf10ConsecutiveTradingDaysInTheMeasurementPeriodOnLastTradingDayOfPreviousQuarterOptionOfHolder
Namespace Prefix:	ttwo_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.

+ References

+ Details

Name:	us-gaap_AdditionalPaidInCapital
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
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-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 1A
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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of amortization expense attributable to debt issuance costs.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(8))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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-Name Accounting Standards Codification
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-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(8))
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Convertible Security
-URI http://asc.fasb.org/extlink&oid=6509036

+ Details

Name:	us-gaap_ConvertibleDebtFairValueDisclosures
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586

+ Details

Name:	us-gaap_DebtConversionConvertedInstrumentAmount1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
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-SubTopic 210
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-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031897-161870

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870

+ Details

Name:	us-gaap_DebtInstrumentConvertibleConversionPrice1
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Conversion Rate
-URI http://asc.fasb.org/extlink&oid=6509012

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(5))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Topic 505
-SubTopic 10
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-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644

+ Details

Name:	us-gaap_DebtInstrumentConvertibleConversionRatio1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount by which the convertible debt's if-converted value exceeds its principle amount at the balance sheet date, regardless of whether the instrument is currently convertible. This element applies to public companies only.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870

+ Details

Name:	us-gaap_DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The number of equity instruments that the holder of the debt instrument would receive if the debt was converted to equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(5))
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-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644

+ Details

Name:	us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instruments must exceed threshold percentage for a specified number of trading days to trigger conversion feature, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentConvertibleThresholdConsecutiveTradingDays
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentConvertibleThresholdTradingDays
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

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-SubTopic 30
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-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount, after accumulated amortization, of debt discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

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-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentUnamortizedDiscount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

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

- Definition

Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

+ Details

Name:	us-gaap_DeferredFinanceCostsGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

+ Details

Name:	us-gaap_DeferredFinanceCostsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391

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-Paragraph 3
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.9)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

+ Details

Name:	us-gaap_InterestExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

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

- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

Name:	us-gaap_InterestExpenseDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
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-Subparagraph (SX 210.9-03(16))
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585

+ Details

Name:	us-gaap_ProceedsFromConvertibleDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=ttwo_ConvertibleSeniorNotes1.75PercentDueIn2016Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ttwo_DebtConversionTermsAxis=ttwo_DebtConversionFundamentalCompanyChangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ttwo_DebtConversionTermsAxis=ttwo_DebtConversionEventOfDefaultMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
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DEBT - CONVERTIBLE NOTES (Details) $ / shares in Units, $ in Thousands				3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 12, 2013 USD ($) item	Jun. 18, 2013 USD ($) item $ / shares	Nov. 16, 2011 USD ($) item $ / shares	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Mar. 31, 2016 USD ($)
Components of interest expense
Non-cash amortization of discount on Convertible Notes						$ 12,981	$ 11,544
Amortization of debt issuance costs						$ 779	792
1.75% Convertible Notes due 2016
Convertible Notes
Principal amount at issuance			$ 250,000
Interest rate on convertible notes (as a percent)			1.75%	1.75%		1.75%		1.75%
Amount pertaining to exercise of over-allotment of debt by underwriters			$ 30,000
Initial conversion rate of common stock per $1000 of principal amount of Convertible Notes (in shares)			52.3745
Principal amount used for debt instrument conversion ratio			$ 1
Initial conversion price of convertible notes into common stock (in dollars per share) \| $ / shares			$ 19.093
Number of shares to be converted into common stock \| item			13,094,000
Estimated fair value of convertible notes			$ 197,373	$ 589,200		$ 589,200
Non-convertible borrowing rate (as a percent)			6.90%
Carrying amount of the equity component of convertible notes			$ 52,627
Banking, legal and accounting fees related to issuance of convertible notes			6,875
Banking, legal and accounting fees related to issuance of convertible notes allocated to the liability component			5,428
Banking, legal and accounting fees related to issuance of convertible notes allocated to the equity component			$ 1,447
The value by which Convertible Notes exceed the principal value				340,278		340,278		$ 243,251
Additional information related to convertible notes
Additional paid-in capital				51,180		51,180		51,180
Principal amount of Convertible Notes				250,000		250,000		250,000
Unamortized discount of the liability component				2,037		2,037		8,014
Carrying amount of debt issuance costs				171		171		657
Net carrying amount of Convertible Notes				247,792		247,792		$ 241,329
Components of interest expense
Cash interest expense (coupon interest expense)				1,093	$ 1,093	2,187	2,187
Non-cash amortization of discount on Convertible Notes				3,014	2,818	5,977	5,591
Amortization of debt issuance costs				241	252	486	508
Total interest expense related to Convertible Notes				4,348	4,163	$ 8,650	8,286
1.75% Convertible Notes due 2016 \| Conversion Terms upon Occurrence of Certain Fundamental Company Changes
Convertible Notes
Redemption price as percentage of principal amount of notes plus accrued and unpaid interest			100.00%
1.75% Convertible Notes due 2016 \| Conversion Terms, Event of Default
Convertible Notes
Minimum percentage of aggregate principal amount held by bondholders to declare notes due and payable			25.00%
In event of default arising out of certain bankruptcy events, the percentage of principal amount due and payable			100.00%
1.00% Convertible Notes due 2018
Convertible Notes
Principal amount at issuance		$ 250,000
Amount tendered for conversion				$ 8,350
Interest rate on convertible notes (as a percent)	1.00%	1.00%		1.00%		1.00%		1.00%
Percentage of par value at which debt was issued		98.50%
Period of overallotment option to purchase additional amount of debt granted to underwriters		30 days
Amount pertaining to exercise of over-allotment of debt by underwriters	$ 37,500
Proceeds from issuance of debt	$ 283,188	$ 246,250
Initial conversion rate of common stock per $1000 of principal amount of Convertible Notes (in shares)		46.4727
Principal amount used for debt instrument conversion ratio		$ 1
Initial conversion price of convertible notes into common stock (in dollars per share) \| $ / shares		$ 21.52
Number of shares to be converted into common stock \| item	13,361,000
Estimated fair value of convertible notes	$ 225,567			$ 603,951		$ 603,951
Non-convertible borrowing rate (as a percent)	6.15%
Carrying amount of the equity component of convertible notes	$ 57,621
Banking, legal and accounting fees related to issuance of convertible notes	2,815
Banking, legal and accounting fees related to issuance of convertible notes allocated to the liability component	2,209
Banking, legal and accounting fees related to issuance of convertible notes allocated to the equity component	$ 606
The value by which Convertible Notes exceed the principal value				314,814		314,814		$ 215,809
Additional information related to convertible notes
Additional paid-in capital				35,784		35,784		35,784
Principal amount of Convertible Notes				287,500		287,500		287,500
Unamortized discount of the liability component				22,968		22,968		29,972
Carrying amount of debt issuance costs				688		688		922
Net carrying amount of Convertible Notes				263,844		263,844		$ 256,606
Components of interest expense
Cash interest expense (coupon interest expense)				698	718	1,417	1,437
Non-cash amortization of discount on Convertible Notes				3,869	2,999	7,004	5,953
Amortization of debt issuance costs				127	112	234	224
Total interest expense related to Convertible Notes				$ 4,694	$ 3,829	$ 8,655	$ 7,614
1.00% Convertible Notes due 2018 \| Maximum
Convertible Notes
Additional amount of debt for purchase of which overallotment option is granted to underwriters		$ 37,500
1.00% Convertible Notes due 2018 \| Conversion Terms at Holder's Option
Convertible Notes
Principal amount used for debt instrument conversion ratio		$ 1
Target ratio of closing share price to conversion price as a condition for conversion or redemption of Convertible Notes (as a percent)		130.00%				130.00%
Ratio of closing share price to conversion price as a condition for conversion of Convertible Notes (as a percent)		98.00%
1.00% Convertible Notes due 2018 \| Conversion Terms at Holder's Option \| Minimum
Convertible Notes
Number of trading days triggering conversion of redemption feature		20 days				20 days
Number of trading days in the measurement period that the entity's common stock closing price to conversion price must exceed a specified percentage of conversion price to trigger conversion feature of notes \| item		5
1.00% Convertible Notes due 2018 \| Conversion Terms at Holder's Option \| Maximum
Convertible Notes
Number of trading days triggering conversion of redemption feature		30 days				30 days
Number of trading days in the measurement period that the entity's common stock closing price to conversion price must exceed a specified percentage of conversion price to trigger conversion feature of notes \| item		10
1.00% Convertible Notes due 2018 \| Conversion Terms upon Occurrence of Certain Fundamental Company Changes
Convertible Notes
Redemption price as percentage of principal amount of notes plus accrued and unpaid interest		100.00%
1.00% Convertible Notes due 2018 \| Conversion Terms, Event of Default
Convertible Notes
Minimum percentage of aggregate principal amount held by bondholders to declare notes due and payable		25.00%
In event of default arising out of certain bankruptcy events, the percentage of principal amount due and payable		100.00%