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

Changes in Accumulated Other Comprehensive Loss by Component - Rollforward (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Changes to accumulated other comprehensive loss by component
Balance at the beginning of the period	$ (6,672)	$ (6,183)
Other comprehensive earning (loss) before reclassifications	(656)	(1,967)
Amounts reclassified from accumulated other comprehensive loss	450	459
Balance at the end of the period	(6,878)	(7,691)
Unrealized Net Loss on Interest Rate Swap
Changes to accumulated other comprehensive loss by component
Balance at the beginning of the period	(1,195)	(937)
Other comprehensive earning (loss) before reclassifications	(656)	(1,967)
Amounts reclassified from accumulated other comprehensive loss	164	181
Balance at the end of the period	(1,687)	(2,723)
Other Postretirement Benefit Liability
Changes to accumulated other comprehensive loss by component
Balance at the beginning of the period	937	1,048
Amounts reclassified from accumulated other comprehensive loss	(50)	(59)
Balance at the end of the period	887	989
Pension Liability
Changes to accumulated other comprehensive loss by component
Balance at the beginning of the period	(6,414)	(6,294)
Amounts reclassified from accumulated other comprehensive loss	336	337
Balance at the end of the period	$ (6,078)	$ (5,957)