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Commitments And Contingencies (Details) (USD $)
0 Months Ended 3 Months Ended 6 Months Ended
Jun. 07, 2012
plaintiff
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
Dec. 31, 2011
Loss Contingencies [Line Items]            
Reversing and remanding of award       $ 4,500,000    
Affirming of award       3,000,000    
Selling, general and administrative expenses   87,153,000 81,973,000   164,898,000 157,383,000
Number of plaintiffs 2          
Amounts paid to plaintiffs 3,500,000          
Amended judgement award for legal settlement         2,800,000  
Interest accruing at statutory rate         6.00%  
Roth Cash Register v. MICROS Systems, Inc., et al. and Shenango Systems Solutions v. MICROS Systems, Inc., et al. Cases [Member]
           
Loss Contingencies [Line Items]            
Selling, general and administrative expenses       $ 3,000,000