In the period of acquisition, an Entity must disclose the characteristics of finite-lived intangible assets acquired. Finite-lived intangible assets are assets that have no physical form, but have expected future economic benefit, and are expected to be used over a defined period of time. Acquired finite-lived intangible assets are disclosed by major class (assets that can be grouped together because they are similar, either by their nature or by their use in operations of the Entity) and in total. Additionally, any significant residual value (the expected value of the asset at the end of its useful life) and the weighted-average amortization period must also be disclosed.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 44
-Subparagraph a

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