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Commitments and Contingencies (Future Minimum Rental Commitments) (Details) (USD $)
Sep. 30, 2014
Commitments and Contingencies [Abstract]  
2015 $ 2,584,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent
2016 2,500,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears
2017 2,514,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears
2018 2,507,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears
2019 2,147,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears
Thereafter 9,036,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter
Total 21,288,000us-gaap_OperatingLeasesFutureMinimumPaymentsDue
Less sublease rentals (2,308,000)us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals
Operating Leases Future Minimum Payments Due, Net $ 18,980,000gtim_OperatingLeasesFutureMinimumPaymentsDueNet