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Note 10 - Activity of Business Segments - Consolidated Net Sales (Details) (USD $)
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Consolidated net sales $ 10,654,000us-gaap_SalesRevenueGoodsNet $ 9,956,000us-gaap_SalesRevenueGoodsNet
Building Supply [Member] | Operating Segments [Member]    
Consolidated net sales 5,811,000us-gaap_SalesRevenueGoodsNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= apt_BuildingSupplyMember		 5,521,000us-gaap_SalesRevenueGoodsNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= apt_BuildingSupplyMember
Disposable Protective Apparel [Member] | Operating Segments [Member]    
Consolidated net sales 3,648,000us-gaap_SalesRevenueGoodsNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= apt_DisposableProtectiveApparelMember		 3,364,000us-gaap_SalesRevenueGoodsNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= apt_DisposableProtectiveApparelMember
Infection Control [Member] | Operating Segments [Member]    
Consolidated net sales $ 1,195,000us-gaap_SalesRevenueGoodsNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= apt_InfectionControlMember		 $ 1,071,000us-gaap_SalesRevenueGoodsNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= apt_InfectionControlMember