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Schedule of Valuation and Qualifying Accounts (Detail) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Movement in Valuation Allowances and Reserves [Roll Forward]    
Balance at beginning of Period $ 209,562us-gaap_ValuationAllowancesAndReservesBalance $ 86,186us-gaap_ValuationAllowancesAndReservesBalance
Charged to costs and expenses 166,773us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense 134,811us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
Deductions (2,775)us-gaap_ValuationAllowancesAndReservesDeductions (11,435)us-gaap_ValuationAllowancesAndReservesDeductions
Valuation against asset 0us-gaap_ValuationAllowancesAndReservesAdjustments 0us-gaap_ValuationAllowancesAndReservesAdjustments
Balance at end of period 373,560us-gaap_ValuationAllowancesAndReservesBalance 209,562us-gaap_ValuationAllowancesAndReservesBalance
Inventory obsolescence    
Movement in Valuation Allowances and Reserves [Roll Forward]    
Balance at beginning of Period 74,751us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember
86,186us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember
Charged to costs and expenses 166,773us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember
0us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember
Deductions (2,775)us-gaap_ValuationAllowancesAndReservesDeductions
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember
(11,435)us-gaap_ValuationAllowancesAndReservesDeductions
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember
Valuation against asset 0us-gaap_ValuationAllowancesAndReservesAdjustments
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember
0us-gaap_ValuationAllowancesAndReservesAdjustments
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember
Balance at end of period 238,749us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember
74,751us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember
Allowances for doubtful Accounts    
Movement in Valuation Allowances and Reserves [Roll Forward]    
Balance at beginning of Period 134,811us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember
0us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember
Charged to costs and expenses 0us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember
134,811us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember
Deductions 0us-gaap_ValuationAllowancesAndReservesDeductions
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember
0us-gaap_ValuationAllowancesAndReservesDeductions
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember
Valuation against asset 0us-gaap_ValuationAllowancesAndReservesAdjustments
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember
0us-gaap_ValuationAllowancesAndReservesAdjustments
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember
Balance at end of period $ 134,811us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember
$ 134,811us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember