Annual report pursuant to Section 13 and 15(d)

Acquisitions (Details Textual)

v2.4.0.6
Acquisitions (Details Textual)
Jan. 31, 2013
USD ($)
Sep. 01, 2012
USD ($)
Sep. 01, 2012
EUR (€)
Jan. 31, 2012
USD ($)
Sep. 01, 2009
USD ($)
Sep. 01, 2009
EUR (€)
Jan. 31, 2013
Flashlight Engineering and Consulting L L C [Member]
USD ($)
Jun. 19, 2012
Flashlight Engineering and Consulting L L C [Member]
USD ($)
Jan. 31, 2013
Event I S Group B V [Member]
USD ($)
Sep. 01, 2009
Event I S Group B V [Member]
USD ($)
Sep. 01, 2009
Event I S Group B V [Member]
EUR (€)
Jan. 31, 2013
Event I S Group B V [Member]
Restricted Stock [Member]
Sep. 01, 2009
Event I S Group B V [Member]
Restricted Stock [Member]
USD ($)
Jan. 31, 2013
Event I S Group B V [Member]
Unvested Restricted Stock Accelerated [Member]
Amended Purchase Agreement [Member]
Jan. 31, 2013
Vivid Logic Inc [Member]
USD ($)
Jan. 31, 2013
Vivid Logic Inc [Member]
Subsequent Event [Member]
USD ($)
Business Acquisition, Cost of Acquired Entity, Cash Paid               $ 300,000 $ 44,000,000             $ 1,000,000
Business Acquisition, Contingent Consideration, Potential Cash Payment             200,000               2,000,000  
Business Combination, Consideration Transferred 26,000,000                 36,600,000            
Acquisition-related consideration $ 5,656,000 [1] $ 2,200,000 [1] € 1,700,000 [1] $ 12,255,000 [1] $ 1,000,000 [1] € 800,000 [1]       $ 1,600,000 € 1,200,000   $ 1,100,000      
Business Acquisition Equity Interests Issued Number Of Shares Issued                       304,000   102,000    
[1] The fair value of our contingent consideration arrangement is determined based on our evaluation as to the probability and amount of any earn-out that will be achieved based on expected future performance by the acquired entity, as well as the fair value of fixed purchase price.