Douglas Dynamics, Inc. Quarterly report pursuant to Section 13 or 15(d)

Changes in Accumulated Other Comprehensive Loss by Component - Reclassifications (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Amounts reclassified from accumulated other comprehensive loss:
Interest expense, net	$ 4,372	$ 5,662	$ 7,347	$ 10,702
Tax expense (benefit)	816	(17,456)	739	(20,718)
Reclassification net of tax	$ (13,879)	$ 103,859	(14,590)	113,945
Interest rate swap \| Amount reclassified from accumulated other comprehensive income
Amounts reclassified from accumulated other comprehensive loss:
Interest expense, net				1,235
Tax expense (benefit)				(321)
Reclassification net of tax				914
Other Postretirement Benefit Liability \| Amount reclassified from accumulated other comprehensive income
Amounts reclassified from accumulated other comprehensive loss:
Actuarial (gains) losses			(156)	(154)
Tax expense (benefit)			41	40
Reclassification net of tax			(115)	$ (114)
Unrealized Net Loss on Interest Rate Swap \| Interest rate swap
Amounts reclassified from accumulated other comprehensive loss:
Interest expense, net			2,108
Tax expense (benefit)			(548)
Reclassification net of tax			$ 1,560

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.