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, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Amounts reclassified from accumulated other comprehensive loss:
Interest expense, net	$ 4,189	$ 4,096	$ 8,339	$ 8,041
Tax expense (benefit)	8,299	6,916	7,836	5,654
Reclassification net of tax	$ (25,154)	$ (20,870)	(24,849)	(19,020)
Interest rate swap \| Amount reclassified from accumulated other comprehensive income
Amounts reclassified from accumulated other comprehensive loss:
Interest expense, net				201
Tax expense (benefit)				(52)
Reclassification net of tax				149
Other Postretirement Benefit Liability \| Amount reclassified from accumulated other comprehensive income
Amounts reclassified from accumulated other comprehensive loss:
Actuarial (gains) losses			(156)	(104)
Tax expense (benefit)			41	27
Reclassification net of tax			(115)	(77)
Pension Liability \| Amount reclassified from accumulated other comprehensive income
Amounts reclassified from accumulated other comprehensive loss:
Actuarial (gains) losses			298	352
Tax expense (benefit)			(78)	(92)
Reclassification net of tax			220	$ 260
Unrealized Net Loss on Interest Rate Swap \| Interest rate swap
Amounts reclassified from accumulated other comprehensive loss:
Interest expense, net			95
Tax expense (benefit)			(25)
Reclassification net of tax			$ 70