pre_text: notes to consolidated financial statements 2014 ( continued ) in connection with these discover related purchases , we have sold the contractual rights to future commissions on discover transactions to certain of our isos . contractual rights sold totaled $ 7.6 million during the year ended may 31 , 2008 and $ 1.0 million during fiscal 2009 . such sale proceeds are generally collected in installments over periods ranging from three to nine months . during fiscal 2009 , we collected $ 4.4 million of such proceeds , which are included in the proceeds from sale of investment and contractual rights in our consolidated statement of cash flows . we do not recognize gains on these sales of contractual rights at the time of sale . proceeds are deferred and recognized as a reduction of the related commission expense . during fiscal 2009 , we recognized $ 1.2 million of such deferred sales proceeds as other long-term liabilities . other 2008 acquisitions during fiscal 2008 , we acquired a majority of the assets of euroenvios money transfer , s.a . and euroenvios conecta , s.l. , which we collectively refer to as lfs spain . lfs spain consisted of two privately- held corporations engaged in money transmittal and ancillary services from spain to settlement locations primarily in latin america . the purpose of the acquisition was to further our strategy of expanding our customer base and market share by opening additional branch locations . during fiscal 2008 , we acquired a series of money transfer branch locations in the united states . the purpose of these acquisitions was to increase the market presence of our dolex-branded money transfer offering . the following table summarizes the preliminary purchase price allocations of all these fiscal 2008 business acquisitions ( in thousands ) : .
post_text: the customer-related intangible assets have amortization periods of up to 14 years . the contract-based intangible assets have amortization periods of 3 to 10 years . these business acquisitions were not significant to our consolidated financial statements and accordingly , we have not provided pro forma information relating to these acquisitions . in addition , during fiscal 2008 , we acquired a customer list and long-term merchant referral agreement in our canadian merchant services channel for $ 1.7 million . the value assigned to the customer list of $ 0.1 million was expensed immediately . the remaining value was assigned to the merchant referral agreement and is being amortized on a straight-line basis over its useful life of 10 years . fiscal 2007 on july 24 , 2006 , we completed the purchase of a fifty-six percent ownership interest in the asia-pacific merchant acquiring business of the hongkong and shanghai banking corporation limited , or hsbc asia pacific . this business provides card payment processing services to merchants in the asia-pacific region . the .
table: Total
table: Goodwill $13,536
table: Customer-related intangible assets 4,091
table: Contract-based intangible assets 1,031
table: Property and equipment 267
table: Other current assets 502
table: Total assets acquired 19,427
table: Current liabilities (2,347)
table: Minority interest in equity of subsidiary (at historical cost) (486)
table: Net assets acquired $16,594
question: Analyse this data from a financial earnings document. what is the average yearly amortization expense related to contract-based intangible assets , ( in thousands ) ?