Annual report pursuant to Section 13 and 15(d)

NOTE 13: - STOCKHOLDERS' EQUITY (Details) - Schedule of Restricted Shares and Restricted Stock Units Activity

v2.4.1.9
NOTE 13: - STOCKHOLDERS' EQUITY (Details) - Schedule of Restricted Shares and Restricted Stock Units Activity (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Restricted Stock [Member]    
NOTE 13: - STOCKHOLDERS' EQUITY (Details) - Schedule of Restricted Shares and Restricted Stock Units Activity [Line Items]    
Non-vested at the beginning of the year 584,746us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
844,270us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
Non-vested at the beginning of the year $ 2.52us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
$ 1.30us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
Shares 341,861us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
270,550us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
Weighted Average Fair Value at Grant Date $ 2.60us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
$ 2.94us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
Vested (166,110)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
(434,732)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
Vested $ 2.23us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
$ 1.22us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
Forfeited (2,994)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
(205,522)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
Forfeited $ 3.65us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
$ 1.41us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
Non-vested at the end of the year 920,678us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
584,746us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
Non-vested at the end of the year $ 2.99us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
$ 2.52us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
Restricted shares vested at end of year 2,954,838artx_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVested
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
2,788,728artx_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVested
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
Restricted shares vested at end of year $ 2.07artx_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedWeightedAverageGrantDateFairValue
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
$ 1.85artx_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedWeightedAverageGrantDateFairValue
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockMember
Restricted Stock Units (RSUs) [Member]    
NOTE 13: - STOCKHOLDERS' EQUITY (Details) - Schedule of Restricted Shares and Restricted Stock Units Activity [Line Items]    
Shares 163,175us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockUnitsRSUMember
110,180us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockUnitsRSUMember
Weighted Average Fair Value at Grant Date $ 2.48us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockUnitsRSUMember
$ 1.67us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ artx_EquityTransactionsAxis
= us-gaap_RestrictedStockUnitsRSUMember