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Note 6. Intangible Assets (Detail) - Amortization Expense Related to Intangible Assets (USD $) In Thousands, unless otherwise specified | 12 Months Ended | 24 Months Ended
--- | --- | ---
Sep. 30, 2012 | Sep. 30, 2012
Amortization Expense | $ 1,030 |  | $ 765 |
Cost of Revenue [Member] |  |  |  |
Amortization Expense | 0 |  | 29 |
Operating Expense [Member] |  |  |  |
Amortization Expense | $ 1,030 | [1] | $ 736 | [1]
[1] | Included in amortization expense for the six months ended March 31, 2012 was a charge to operations of $281 thousand for impairment charges related to assets assumed from our fiscal 2010 acquisition of e.Magination and its wholly-owned subsidiary eMagination IG, LLC (now Bridgeline Intelligence Group, Inc.). In the first quarter of fiscal 2012, the Company stopped servicing low margin non-iAPPS opportunities acquired from e.Magination IG, LLC. It was therefore determined that a portion of the customer list was impaired. The impairment charge is included in operating expenses in the Company's Condensed Consolidated Statements of Operations.

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- Definition The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration