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Related party transactions
6 Months Ended
Jan. 31, 2012
Related party transactions

17. Related party transactions:

On July 25, 2011, the Company entered into an agreement to sell its 25% interest in its China-based affiliate for $2,500. The book value of the interest in the China-based affiliate was written down to $0 in fiscal year 2006, and the Company, upon final approval of the transaction by the Chinese government and receipt of the proceeds, recorded a gain on sale of other investments of $2,500 in the three and six months ended January 31, 2012.

At January 31, 2012, the Company had no accounts receivable outstanding or any deferred revenue or advanced payments from its China-based affiliate. At July 31, 2011, the Company had a net advance payments and deferred revenue balance of $474 from its China-based affiliate. Sales to this China-based affiliate for the three and six months ended January 31, 2012 were $507 and $1,570, respectively. Sales to this China-based affiliate for the three and six months ended January 31, 2011 were $895 and $998, respectively.