| Component: (Network and Table) | |
|---|---|
| Network | 040 - Disclosure - Note 2 - Summary of Significant Accounting Policies - Estimated Useful Lives of Intangible Assets (Details) (http://www.bridgelinedigital.com/20160930/role/statement-note-2-summary-of-significant-accounting-policies-estimated-useful-lives-of-intangible-assets-details) |
| Table | Statement [Table] |
| Reporting Entity [Axis] | 0001378590 (http://www.sec.gov/CIK) |
| Scenario [Axis] | Scenario, Unspecified [Domain] |
| Statement [Line Items] | Period [Axis] | ||||||
|---|---|---|---|---|---|---|---|
2015-10-01 - 2016-09-30 | |||||||
| Finite-Lived Intangible Assets by Major Class [Axis] | |||||||
| Developed And Core Technology [Member] | Noncompete Agreements [Member] | Customer Relationships [Member] | Trademarks and Trade Names [Member] | ||||
| Range [Axis] | Range [Axis] | Range [Axis] | Range [Axis] | ||||
| Range [Domain] | Minimum [Member] | Maximum [Member] | Minimum [Member] | Maximum [Member] | Minimum [Member] | Maximum [Member] | |
Estimated Useful Life (Year) | |||||||