Note F - Significant Customers (Details Textual) - Customer Concentration Risk [Member] - Sales Revenue, Net [Member] xbrli-pure in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Customers to Which the Company’s Products Are Sold Through Tomen Electronics [Member]
Number of Major Customers	0	0	0	0
Customers to Which the Company's Products Are Sold Through Ascend Technology [Member]
Number of Major Customers	0	0	0	0

Represents the number of major customers accounting for 10% or more of the specified concentration risk benchmark, which includes, but not limited to, sales revenue, accounts receivable, etc.

No definition available.

Name:	dspg_NumberOfMajorCustomers
Namespace Prefix:	dspg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration