Earnings Per Share - Reconciliation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Numerator:
Net (loss) income	$ (52,500)	$ 6,193
Net (loss) income attributable to non-controlling interest	(20,548)	3,991
Net (loss) income attributable to Digital Media Solutions, Inc.- basic and diluted	$ (31,952)	$ 2,202
Denominator:
Weighted-average shares outstanding - basic (in shares)	38,252	35,249
Add: dilutive effects of equity awards under the 2020 Omnibus Incentive Plan (in shares)	27	389
Weighted-average shares outstanding - diluted (in shares)	38,279	35,764
Net (loss) earnings per common share:
Basic (usd per share)	$ (0.84)	$ 0.06
Diluted (usd per share)	$ (0.84)	$ 0.06
Public Warrant
Denominator:
Add: dilutive effects of warrants (in shares)	0	126