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Note 6 - Property and Equipment (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Note 6 - Property and Equipment (Details) [Line Items]    
Depreciation, Depletion and Amortization $ 657us-gaap_DepreciationDepletionAndAmortization $ 539us-gaap_DepreciationDepletionAndAmortization
Operating Leases, Rent Expense $ 322us-gaap_LeaseAndRentalExpense $ 324us-gaap_LeaseAndRentalExpense
Main Office [Member]    
Note 6 - Property and Equipment (Details) [Line Items]    
Lessee Leasing Arrangements, Operating Leases, Renewal Term 5 years  
Maximum Rental Increase 3.00%hmta_MaximumRentalIncrease
/ us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis
= hmta_MainOfficeMember		  
Branch Location 1 [Member]    
Note 6 - Property and Equipment (Details) [Line Items]    
Lessee Leasing Arrangements, Operating Leases, Renewal Term 5 years  
Maximum Rental Increase 3.00%hmta_MaximumRentalIncrease
/ us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis
= hmta_BranchLocation1Member		  
Automated Teller Machine [Member]    
Note 6 - Property and Equipment (Details) [Line Items]    
Lessee Leasing Arrangements, Operating Leases, Renewal Term 5 years  
Maximum Rental Increase 3.00%hmta_MaximumRentalIncrease
/ us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis
= hmta_AutomatedTellerMachineMember