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Note 10 - Shareholders' Equity (Details) - Stock Option Valuation Assumptions (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Stock Option Valuation Assumptions [Abstract]    
Exercise price (in Dollars per share)    [1] $ 1.51us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice [1]
Risk-free interest rate    [1] 1.39%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate [1]
Expected volatility    [1] 46.80%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate [1]
Expected life in years    [1] 4 years 3 months [1]
Dividend rate 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate [1]    [1]
Black-Scholes fair value (in Dollars)    [1] $ 0.59apt_StockOptionsFairValueBasedOnBlackScholesMerton [1]
[1] The fair value calculation was based on the stock options granted during the year.