Note 15 - Government Grants (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Government Grants [Abstract]
Financial Grants in Support of Research and Development	$ 277	$ 460	$ 1,891	$ 2,500
Financial Grants in Support of Research and Development, Royalty Obligation	5.00%		5.00%

Royalty obligation that must be paid on sales of certain products the development of which received grants in previous years. Expressed as a percentage of sales.

No definition available.

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Namespace Prefix:	dspg_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant