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STOCK REPURCHASE PROGRAM (Details Textual) (USD $)
3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Nov. 03, 2010
Equity, Class of Treasury Stock [Line Items]      
Treasury Stock, Shares 683,000us-gaap_TreasuryStockShares 664,000us-gaap_TreasuryStockShares  
Treasury Stock, Value $ 3,707,000us-gaap_TreasuryStockValue $ 3,590,000us-gaap_TreasuryStockValue [1]  
Share Repurchase Program [Member]      
Equity, Class of Treasury Stock [Line Items]      
Treasury Stock, Shares 310,000us-gaap_TreasuryStockShares
/ us-gaap_ShareRepurchaseProgramAxis
= idsy_ShareRepurchaseProgramMember
   
Treasury Stock, Value 1,340,000us-gaap_TreasuryStockValue
/ us-gaap_ShareRepurchaseProgramAxis
= idsy_ShareRepurchaseProgramMember
   
Treasury Stock Acquired, Average Cost Per Share $ 4.33us-gaap_TreasuryStockAcquiredAverageCostPerShare
/ us-gaap_ShareRepurchaseProgramAxis
= idsy_ShareRepurchaseProgramMember
   
Stock Repurchase Program, Authorized Amount     $ 3,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount1
/ us-gaap_ShareRepurchaseProgramAxis
= idsy_ShareRepurchaseProgramMember
[1] Derived from audited balance sheet as of December 31, 2014.