Douglas Dynamics, Inc. Annual report pursuant to Section 13 and 15(d)

Changes in Accumulated Other Comprehensive Loss by Component - Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 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	(487)	(1,101)
Amounts reclassified from accumulated other comprehensive loss	587	612
Balance at the end of the period	(6,572)	(6,672)
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	(338)	(500)
Amounts reclassified from accumulated other comprehensive loss	205	242
Balance at the end of the period	(1,328)	(1,195)
Other Postretirement Benefit Liability
Changes to accumulated other comprehensive loss by component
Balance at the beginning of the period	937	1,048
Other comprehensive earning (loss) before reclassifications	521	(32)
Amounts reclassified from accumulated other comprehensive loss	(66)	(79)
Balance at the end of the period	1,392	937
Pension Liability
Changes to accumulated other comprehensive loss by component
Balance at the beginning of the period	(6,414)	(6,294)
Other comprehensive earning (loss) before reclassifications	(670)	(569)
Amounts reclassified from accumulated other comprehensive loss	448	449
Balance at the end of the period	$ (6,636)	$ (6,414)