Note 10 - Commitments and Contingencies (Details Textual)	3 Months Ended
Dec. 31, 2016 USD ($)
Purchase Obligation, Per Year Minimum Payment	$ 700,000
Purchase Obligation, Annual Minimum License Fees	$ 30,000

Minimum amount of purchase arrangement due each year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

No definition available.

Name:	span_PurchaseObligationPerYearMinimumPayment
Namespace Prefix:	span_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant