Acquisitions (Tables)

12 Months Ended

Dec. 31, 2019

Dec. 31, 2017

Business Combinations [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed

The following table summarizes the fair value measurement of the assets acquired and liabilities assumed as of the date of acquisition:

ASSETS
Current Assets	$	8.5
Intangible Assets Subject to Amortization:
Trade Name	1.8
Customer Lists	13.9
Other Assets	1.3
Total Identifiable Assets Acquired	25.5
LIABILITIES
Current Liabilities	(8.0		)
Long-Term Liabilities	(6.0		)
Total Identifiable Liabilities Assumed	(14.0		)
Goodwill	15.6
Total Purchase Price	$	27.1

Business Acquisition, Pro Forma Information [Table Text Block]

The following unaudited pro forma financial information presents the combined results of operations of the Company as if the acquisition of IPC Group had occurred as of January 1, 2017:

Years ended December 31	2017
Net Sales
Pro forma	$	1,057.1
As reported	1,003.1
Net Earnings (Loss) Attributable to Tennant Company
Pro forma	$	12.3
As reported	(6.2		)
Net Earnings (Loss) Attributable to Tennant Company per Diluted Share
Pro forma	$	0.68
As reported	(0.35		)