Note P - Government Grants (Details Textual) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Financial Grants in Support of Research and Development	$ 633	$ 500	$ 1,001	$ 1,000
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.

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