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FINANCING RECEIVABLES (Details) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]    
Less: Allowance for credit losses $ 0us-gaap_FinancingReceivableAllowanceForCreditLosses $ 0us-gaap_FinancingReceivableAllowanceForCreditLosses
Financing Receivable, Net 5,620,000us-gaap_NotesReceivableNet 5,970,000us-gaap_NotesReceivableNet
Financing receivables, net current 1,858,000us-gaap_NotesAndLoansReceivableNetCurrent 1,898,000us-gaap_NotesAndLoansReceivableNetCurrent [1]
Financing receivables - less current portion 3,762,000us-gaap_NotesAndLoansReceivableNetNoncurrent 4,072,000us-gaap_NotesAndLoansReceivableNetNoncurrent [1]
Notes Receivable [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables, Gross 21,000us-gaap_NotesReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= us-gaap_NotesReceivableMember
27,000us-gaap_NotesReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= us-gaap_NotesReceivableMember
Financing Receivable, Net 21,000us-gaap_NotesReceivableNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= us-gaap_NotesReceivableMember
25,000us-gaap_NotesReceivableNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= us-gaap_NotesReceivableMember
Sales-type lease receivable [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing receivables, Gross 5,599,000us-gaap_NotesReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= idsy_SalestypeLeaseReceivableMember
5,943,000us-gaap_NotesReceivableGross
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= idsy_SalestypeLeaseReceivableMember
Financing Receivable, Net $ 1,837,000us-gaap_NotesReceivableNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= idsy_SalestypeLeaseReceivableMember
$ 1,873,000us-gaap_NotesReceivableNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= idsy_SalestypeLeaseReceivableMember
[1] Derived from audited balance sheet as of December 31, 2014.