XML 26 R42.htm IDEA: XBRL DOCUMENT v2.4.0.8
Accrued Expenses and Other Current Liabilities (Accrued Business Acquisition Payments) (Details) (USD $)
 6 Months Ended 3 Months Ended 6 Months Ended 42 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended
Jan. 31, 2014
Jan. 31, 2013
Jan. 31, 2014
Acquisition of Stampede Technologies, Inc. [Member]
Jan. 31, 2013
Acquisition of Stampede Technologies, Inc. [Member]
Jan. 31, 2014
Acquisition of Stampede Technologies, Inc. [Member]
Jan. 31, 2013
Acquisition of Stampede Technologies, Inc. [Member]
Jan. 31, 2014
Acquisition of Stampede Technologies, Inc. [Member]
Oct. 31, 2010
Acquisition of Stampede Technologies, Inc. [Member]
Jan. 31, 2014
Technologies [Member]
Jul. 31, 2013
Technologies [Member]
Jan. 31, 2014
Technologies [Member]
Acquisition of Stampede Technologies, Inc. [Member]
Business Acquisition [Line Items]                      
Effective date of acquisition             Oct. 01, 2010        
Aggregate purchase price               $ 5,303,000      
Business acquisition, contingent consideration, at fair value               3,803,000      
Finite-lived intangible asset, useful life                 11 years 9 months 18 days 11 years 8 months 12 days 5 years
Benefit related to a change in fair value of contingent earn-out liability 239,000 3,267,000   889,000 239,000 3,267,000          
Business acquisition contingent consideration interest accretion expense     0 25,000 0 133,000 986,000        
Purchase price paid in cash as of the balance sheet date     1,865,000   1,865,000   1,865,000        
Payment of contingent consideration related to business acquisition $ 49,000 $ 10,000 $ 43,000       $ 365,000