Note 15 - Discontinued Operations (Details) - Assets and liabilities related to discontinued operations (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013
Assets and liabilities related to discontinued operations [Abstract]
Current assets	$ 483
Other non-current assets	3,000
Accrued expenses	795
Other non-current liabilities	$ 3,219

Liabilities of discontinued operations noncurrent.

No definition available.

Name:	sxi_LiabilitiesOfDiscontinuedOperationsNoncurrent
Namespace Prefix:	sxi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant