XML 108 R97.htm IDEA: XBRL DOCUMENT v2.4.0.8

Long-Term Debt - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	1 Months Ended	3 Months Ended		6 Months Ended	9 Months Ended		12 Months Ended
	Aug. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Jun. 30, 2013	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	May 31, 2011
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	$ 925,000							$ 380,000
Termination of credit facility	380,000
Credit facility, maximum borrowing capacity, outstanding	380,000
Margin over LIBOR					2.75%		3.25%
LIBOR floor rate				0.75%	0.75%		1.00%
Term loan amounts outstanding, gross				671,625
Unmodified portion of Term Loan				553,589
Extinguishment of outstanding term loan				118,036
Increase in outstanding term loan				121,410
Acceleration amortization of debt issuance cost		0	5,534		3,157	5,534
Term loan amounts outstanding		658,920			658,920		661,861
Debt amortization expense					14,392		11,452
Principal amount of term loan					675,000
Credit facility, frequency of payments					Quarterly
Percentage of Principal amount of existing credit facility to be paid periodically					0.25%
Maturity date of term loan agreement					Aug. 30, 2019
Term-Loan Credit Facility
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	675,000			675,000				120,000
Margin over LIBOR				2.75%
Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	250,000							260,000
Margin over LIBOR				2.50%
Original Margin
Debt Instrument [Line Items]
Margin over LIBOR				3.25%	3.25%
LIBOR floor rate				1.00%
Term Loans
Debt Instrument [Line Items]
Acceleration amortization of debt issuance cost				3,103
Revolving Credit Facilities
Debt Instrument [Line Items]
Acceleration amortization of debt issuance cost				$ 54

X

- Definition

It represents the acceleration of amortization of debt issue cost related to the amendment of the existing credit facility. It also includes an additional fee paid to lenders in connection with the amendment of credit facility.

+ References

No definition available.

+ Details

Name:	g_AccelerationOfAmortizationOfDebtIssueCost
Namespace Prefix:	g_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Debt amortization expense.

+ References

No definition available.

+ Details

Name:	g_DebtAmortizationExpense
Namespace Prefix:	g_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

It represents the amount of additional funding received on amendment of existing credit facility.

+ References

No definition available.

+ Details

Name:	g_IncreaseInOutstandingTermLoan
Namespace Prefix:	g_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

It represents the minimum LIBOR to be considered for calculating rate of interest on the credit facility.

+ References

No definition available.

+ Details

Name:	g_LiborFloorRate
Namespace Prefix:	g_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line of Credit Facility, Borrowing Capacity Terminated

+ References

No definition available.

+ Details

Name:	g_LineOfCreditFacilityBorrowingCapacityTerminated
Namespace Prefix:	g_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Percentage of the principal amount of the credit facility to be paid periodically.

+ References

No definition available.

+ Details

Name:	g_LineOfCreditFacilityPercentageOfPrincipalRepayment
Namespace Prefix:	g_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

It represents the principal amount of the long term borrowing under the credit facility.

+ References

No definition available.

+ Details

Name:	g_LineOfCreditLongTermFacilityPrincipalAmount
Namespace Prefix:	g_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

This element represents the margin to be added to LIBOR to arrive at the interest rate to be paid on the credit facility.

+ References

No definition available.

+ Details

Name:	g_MarginOverLiborForInterestRateOnLineOfCredit
Namespace Prefix:	g_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

It represents the gross amount of term loan outstanding on the date of amendment of existing credit facility.

+ References

No definition available.

+ Details

Name:	g_TermLoanOutstandingGross
Namespace Prefix:	g_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

It represents that portion of the term loan which do not have any substantial modification due to the amendment of existing credit facility.

+ References

No definition available.

+ Details

Name:	g_UnmodifiedPortionTermLoan
Namespace Prefix:	g_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

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

X

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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

X

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ 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 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityExpirationDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Description of the frequency of periodic payments, which may be presented in a variety of ways (for example, monthly, quarterly, annually).

+ 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 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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

X

- Definition

Maximum amount borrowed under the credit facility at any time during the period.

+ References

No definition available.

+ Details

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

X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ 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 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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

X

- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. 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 SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 7



Reference 2: 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)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



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

-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



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20, 22

-Article 5



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

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