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	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Changes to accumulated other comprehensive loss by component
Balance at the beginning of the period	$ (6,572)	$ (6,672)
Other comprehensive earning (loss) before reclassifications	1,460	(586)
Amounts reclassified from accumulated other comprehensive loss	332	311
Balance at the end of the period	(4,780)	(6,947)
Unrealized Net Loss on Interest Rate Swap
Changes to accumulated other comprehensive loss by component
Balance at the beginning of the period	(1,328)	(1,195)
Other comprehensive earning (loss) before reclassifications	1,460	(586)
Amounts reclassified from accumulated other comprehensive loss	149	120
Balance at the end of the period	281	(1,661)
Other Postretirement Benefit Liability
Changes to accumulated other comprehensive loss by component
Balance at the beginning of the period	1,392	937
Amounts reclassified from accumulated other comprehensive loss	(77)	(33)
Balance at the end of the period	1,315	904
Pension Liability
Changes to accumulated other comprehensive loss by component
Balance at the beginning of the period	(6,636)	(6,414)
Amounts reclassified from accumulated other comprehensive loss	260	224
Balance at the end of the period	$ (6,376)	$ (6,190)