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Noncontrolling Interest (Detail Textuals) (USD $)
 9 Months Ended 0 Months Ended
Mar. 31, 2015
Aug. 28, 2014
Aug. 22, 2014
Jun. 30, 2014
Noncontrolling Interest [Line Items]        
Ownership percentage description in subsidiaries less than 100%      
Noncontrolling interest $ 154,000us-gaap_MinorityInterest     $ 1,800,000us-gaap_MinorityInterest
Payment of common stock repurchase right 2,300,000astc_PaymentOfCommonStockRepurchaseRight      
Astral Images, Inc        
Noncontrolling Interest [Line Items]        
Ownership percentage 67.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= astc_AstralImagesIncMember		      
Texas emerging technology fund        
Noncontrolling Interest [Line Items]        
Noncontrolling interest       1,800,000us-gaap_MinorityInterest
/ us-gaap_LeaseArrangementTypeAxis
= astc_TexasEmergingTechnologyFundMember
1st Detect | Texas emerging technology fund        
Noncontrolling Interest [Line Items]        
Payment of common stock repurchase right   $ 2,300,000astc_PaymentOfCommonStockRepurchaseRight
/ us-gaap_LeaseArrangementTypeAxis
= astc_TexasEmergingTechnologyFundMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= astc_FirstDetectMember		 $ 2,300,000astc_PaymentOfCommonStockRepurchaseRight
/ us-gaap_LeaseArrangementTypeAxis
= astc_TexasEmergingTechnologyFundMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= astc_FirstDetectMember