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Mortgage Notes Payable and Line of Credit - Schedule of Principal Payments of Mortgage Notes Payable (Detail) (Mortgages Notes Payable [Member], USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2014
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Mortgages Notes Payable [Member]
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| Debt Instrument [Line Items] | |
| 2015 |
$ 42,436us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths / us-gaap_DebtInstrumentAxis = good_MortgagesAndNotesPayableMember |
| 2016 |
99,042us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo / us-gaap_DebtInstrumentAxis = good_MortgagesAndNotesPayableMember |
| 2017 |
67,653us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree / us-gaap_DebtInstrumentAxis = good_MortgagesAndNotesPayableMember |
| 2018 |
20,260us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour / us-gaap_DebtInstrumentAxis = good_MortgagesAndNotesPayableMember |
| 2019 |
34,936us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive / us-gaap_DebtInstrumentAxis = good_MortgagesAndNotesPayableMember |
| Thereafter |
194,265good_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearSix / us-gaap_DebtInstrumentAxis = good_MortgagesAndNotesPayableMember |
| Total Mortgage Notes Payable |
$ 458,592us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = good_MortgagesAndNotesPayableMember |
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- Definition
Long-term debt maturities repayments of principal after year six. No definition available.
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- Definition
Face (par) amount of debt instrument at time of issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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