fiscal 2004 acquisitions in february 2004 , the company completed the acquisition of all the outstanding shares of accelerant networks , inc .( accelerant ) for total consideration of $ 23.8 million , and the acquisition of the technology assets of analog design automation , inc .( ada ) for total consideration of $ 12.2 million .the company acquired accelerant in order to enhance the company 2019s standards-based ip solutions .the company acquired the assets of ada in order to enhance the company 2019s analog and mixed signal offerings .in october 2004 , the company completed the acquisition of cascade semiconductor solutions , inc .( cascade ) for total upfront consideration of $ 15.8 million and contingent consideration of up to $ 10.0 million to be paid upon the achievement of certain performance milestones over the three years following the acquisition .contingent consideration totaling $ 2.1 million was paid during the fourth quarter of fiscal 2005 and has been allocated to goodwill .the company acquired cascade , an ip provider , in order to augment synopsys 2019 offerings of pci express products .included in the total consideration for the accelerant and cascade acquisitions are aggregate acquisition costs of $ 4.3 million , consisting primarily of legal and accounting fees and other directly related charges .as of october 31 , 2006 the company has paid substantially all the costs related to these acquisitions .in fiscal 2004 , the company completed one additional acquisition and two additional asset acquisition transactions for aggregate consideration of $ 12.3 million in upfront payments and acquisition-related costs .in process research and development expenses associated with these acquisitions totaled $ 1.6 million for fiscal 2004 .these acquisitions are not considered material , individually or in the aggregate , to the company 2019s consolidated balance sheet and results of operations .as of october 31 , 2006 , the company has paid substantially all the costs related to these acquisitions .the company allocated the total aggregate purchase consideration for these transactions to the assets and liabilities acquired , including identifiable intangible assets , based on their respective fair values at the acquisition dates , resulting in aggregate goodwill of $ 24.5 million .aggregate identifiable intangible assets as a result of these acquisitions , consisting primarily of purchased technology and other intangibles , are $ 44.8 million , and are being amortized over three to five years .the company includes the amortization of purchased technology in cost of revenue in its statements of operations .note 4 .goodwill and intangible assets goodwill consists of the following: .
[['', '( in thousands )'], ['balance at october 31 2004', '$ 593706'], ['additions ( 1 )', '169142'], ['other adjustments ( 2 )', '-33869 ( 33869 )'], ['balance at october 31 2005', '$ 728979'], ['additions ( 3 )', '27745'], ['other adjustments ( 4 )', '-21081 ( 21081 )'], ['balance at october 31 2006', '$ 735643']]
( 1 ) during fiscal year 2005 , additions represent goodwill acquired in acquisitions of ise and nassda of $ 72.9 million and $ 92.4 million , respectively , and contingent consideration earned and paid of $ 1.7 million and $ 2.1 million related to an immaterial acquisition and the acquisition of cascade , respectively .( 2 ) during fiscal year 2005 , synopsys reduced goodwill primarily related to tax reserves for avant! no longer probable due to expiration of the federal statute of limitations for claims. .

Question: what is the variation observed in the balance between 2005 and 2006 , in thousands?
Answer: 6664
Explanation: it is the difference between those values .