Quarterly report pursuant to Section 13 or 15(d)

Mortgage Note Receivable - Additional Information (Detail)

v2.4.1.9
Mortgage Note Receivable - Additional Information (Detail) (USD $)
0 Months Ended 3 Months Ended
Jul. 25, 2014
Mar. 31, 2015
Jul. 25, 2014
sqft
Debt Disclosure [Abstract]      
Second mortgage development loan     $ 5,600,000us-gaap_MortgageLoansOnRealEstate
Acquisition of our property, area     81,371us-gaap_AreaOfRealEstateProperty
Construction loans scheduled maturity 2015-09    
Percentage of Interest earned in cash     9.00%good_PercentageOfMortgageLoanInterestEarnedInCash
Estimated percentage of rate of Interest     22.00%good_EffectOfMortgageLoanRateOfReturnEstimate
Mortgage development loan scheduled maturity 2016-07    
Mortgage development loan scheduled maturity extension period option 1 year    
Cash interest income and accrued exit fee revenue recognized   $ 268,000good_InterestIncomeFromMortgageNoteReceivable