Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Summary of Significant Accounting Policies (Tables) [Line Items]

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

In thousands	2020		2019
Balance at beginning of year	$	743	$	1,797
Provisions		123		(97)
Write-offs		(206)		(957)
Balance at end of year	$	660	$	743

Schedule Of Property Plant And Equipment Estimated UsefuL Life [Table Text Block]

	Years
Indoor rental equipment	10
Outdoor rental equipment	15
Machinery, fixtures and equipment	5 – 15
Leaseholds and improvements	7