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Note 7 - Intangible Assets (Tables) | 9 Months Ended
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Mar. 31, 2015
Disclosure Text Block [Abstract] |
Schedule of Intangible Assets Excluding Goodwill [Table Text Block] |
|  | Customer Relationships |  |  | Trademarks |  |  | Other |  |  | Total |
March 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost |  | $ | 42,997 |  |  | $ | 15,444 |  |  | $ | 4,025 |  |  | $ | 62,466 |
Accumulated amortization |  |  | (21,938 | ) |  |  | - |  |  |  | (2,271 | ) |  |  | (24,209 | )
Balance, March 31, 2015 |  | $ | 21,059 |  |  | $ | 15,444 |  |  | $ | 1,754 |  |  | $ | 38,257 |
June 30, 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost |  | $ | 36,145 |  |  | $ | 14,508 |  |  | $ | 4,061 |  |  | $ | 54,714 |
Accumulated amortization |  |  | (21,137 | ) |  |  | - |  |  |  | (2,087 | ) |  |  | (23,224 | )
Balance, June 30, 2014 |  | $ | 15,008 |  |  | $ | 14,508 |  |  | $ | 1,974 |  |  | $ | 31,490 |

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- Definition Tabular disclosure of intangible assets that exclude goodwill. + References No definition available. + Details
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Namespace Prefix: | sxi_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_DisclosureTextBlockAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration