Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net Earnings (Loss) Including Noncontrolling Interest	$ 3,596	$ 11,477	$ (3,017)	$ 31,244
Other Comprehensive Income:
Foreign currency translation adjustments	9,033	381	25,073	4,380
Pension and retiree medical benefits	379	23	541	61
Cash flow hedge	(1,732)	35	(6,311)	(394)
Income Taxes:
Foreign currency translation adjustments	0	10	0	15
Pension and retiree medical benefits	(138)	(9)	(160)	(23)
Cash flow hedge	646	(13)	2,354	147
Total Other Comprehensive Income, Net of Tax	8,188	427	21,497	4,186
Total Comprehensive Income Including Noncontrolling Interest	11,784	11,904	18,480	35,430
Comprehensive Income (Loss) Attributable to Noncontrolling Interest	37	0	(28)	0
Comprehensive Income Attributable to Tennant Company	$ 11,747	$ 11,904	$ 18,508	$ 35,430