Stockholders' Equity - Summary of Outstanding Note Issued to Employee for Exercise of Stock Options (Detail) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | |
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Dec. 31, 2014
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Dec. 31, 2013
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Debt Conversion [Line Items] | ||
Outstanding Balance of Employee Loan | $ 375us-gaap_ReceivableFromShareholdersOrAffiliatesForIssuanceOfCapitalStock | $ 375us-gaap_ReceivableFromShareholdersOrAffiliatesForIssuanceOfCapitalStock |
Note Outstanding One [Member] | ||
Debt Conversion [Line Items] | ||
Date Issued | 2006-11 | |
Outstanding Balance of Employee Loan |
$ 375us-gaap_ReceivableFromShareholdersOrAffiliatesForIssuanceOfCapitalStock / us-gaap_DebtInstrumentAxis = good_NoteOutstandingOneMember |
$ 375us-gaap_ReceivableFromShareholdersOrAffiliatesForIssuanceOfCapitalStock / us-gaap_DebtInstrumentAxis = good_NoteOutstandingOneMember |
Maturity Date of Note | 2015-11 | |
Interest Rate on Note |
8.15%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = good_NoteOutstandingOneMember |
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- Definition
Maturity date of note. No definition available.
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- Definition
Stock option date issued. No definition available.
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- Definition
Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amounts due from owners or affiliates of the reporting entity related to issuance of the entity's capital stock before cash payment is received (does not include amounts due from officers or directors). This element would also include the receivable for proceeds from the issuance of shares under employee stock option exercises which proceeds have not been received as of the reporting date due to the timing of the transaction date versus the settlement date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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