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v2.4.0.6

Operating Segments (Details 1) | 12 Months Ended
--- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2010
Revenue from major customers |  |  |
Major customer percentage of total revenue | 19.00% |  |
Medtronic [Member] |  |  |
Revenue from major customers |  |  |
Major customer percentage of total revenue | 19.00% | 18.00% | 16.00%
Johnson & Johnson [Member] |  |  |
Revenue from major customers |  |  |
Major customer percentage of total revenue |  | 16.00% | 22.00%

X
- Details
Name: | srdx_RevenueFromMajorCustomersAbstract
Namespace Prefix: | srdx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues. + References No definition available. + Details
Name: | us-gaap_EntityWideRevenueMajorCustomerPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration