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
$593,706
Additions(1)
169,142
Other adjustments(2)
(33,869)
Balance at October 31, 2005
$728,979
Additions(3)
27,745
Other adjustments(4)
(21,081)
Balance at October 31, 2006
$735,643

( 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: Analyse this data from a financial earnings document. what is the variation observed in the balance between 2005 and 2006 , in thousands?
Choices:
0
6664
1464622
735641.4
6664.0
Correct choice index: 4