Condensed Consolidated Statements of Operations (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Equity-based compensation expense included in cost of revenues	$ 161	$ 120
Equity-based compensation expenses included in research and development, net	1,142	751
Equity-based compensation expense included in sales and marketing	626	555
Equity-based compensation expense included in general and administrative	$ 601	$ 406

Amount of equity-based compensation expense included in general and administrative expense.

No definition available.

Name:	dspg_GeneralAndAdministrativeIncludedInEquityBasedCompensationExpense
Namespace Prefix:	dspg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration