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Line of Credit - Additional Information (Detail) (USD $)
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3 Months Ended |
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Mar. 31, 2015
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| Line of Credit Facility [Line Items] | |
| Revolving credit facility | $ 80,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity |
| Revolving credit facility, extended maturity date | Dec. 31, 2015 |
| Revolving credit facility, interest rate above LIBOR | 1.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 |
| Revolving credit facility, interest rate description | Amounts borrowed under the credit facility bear interest, at our option, at either the prime lending rate established by JPMorgan Chase Bank, N.A. or LIBOR plus 1.5 percent. |
| Revolving credit facility, unused annual commitment fee | 0.25%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage |
| Revolving credit facility, amount outstanding | 0gifi_LineOfCreditFacilityAmountBorrowed |
| Total outstanding letters of credit | 13,500,000us-gaap_LettersOfCreditOutstandingAmount |
| Revolving credit facility, unused portion | 66,500,000us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity |
| Line of credit covenant, debt to net worth | 0.5gifi_DebtToNetWorthRatio |
| Line of credit covenant, Earnings before interest, taxes, depreciation and amortization (EBITDA) to interest expense ratio | 4.0gifi_EarningsBeforeInterestTaxDepreciationAndAmortizationToInterestExpenseRatio |
| Line of credit covenant, minimum net worth required | $ 254,200,000us-gaap_MinimumNetWorthRequiredForCompliance |
| Minimum [Member] | |
| Line of Credit Facility [Line Items] | |
| Line of credit covenant, current ratio |
1.25gifi_CurrentRatio / us-gaap_RangeAxis = us-gaap_MinimumMember |
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- Definition
Current ratio No definition available.
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- Definition
Debt to Net Worth Ratio No definition available.
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- Definition
EBITDA To Interest Expense Ratio No definition available.
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- Definition
Total amount borrowed under the credit facility as of the date of the report. No definition available.
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- Definition
Line of credit facility extended maturity date. No definition available.
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- Definition
Percentage points added to the reference rate to compute the variable rate on the debt instrument. No definition available.
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- Definition
Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. No definition available.
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- Details
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- 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. No definition available.
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- Definition
The lowest amount of net worth (total assets minus total liabilities) required by secondary market investors or state-imposed regulatory mandates. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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