SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Description of Business (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Operating Lease, Right-of-Use Asset	$ 24,143				$ 29,430				$ 24,143	$ 29,430
Foreign Currency Transaction and Translation Gains/Losses, Selling and Marketing Expense									$ 1,300	400	$ 600
Number of Reporting Units									1
Accounts Receivable Percentage Not Attained by Individual Customer	10.00%								10.00%
Net Assets	$ (124,100)								$ (124,100)
Operating Lease, Liability	28,477								28,477
Marketing and selling	$ 28,983	$ 24,413	$ 21,354	$ 20,744	$ 22,660	$ 19,998	$ 19,690	$ 25,289	95,494	87,637	99,944
Advertising Expense									$ 2,900	$ 100	$ 1,000
Other Intangible Assets [Member] | Minimum Estimated Useful Life of Intangible Assets [Member]
Finite-Lived Intangible Asset, Useful Life									2 years
Other Intangible Assets [Member] | Maximum Estimated Useful Life of Intangible Assets [Member]
Finite-Lived Intangible Asset, Useful Life									12 years
Software Development [Member]
Capitalized software costs, expected life, minimum (in months)									12 months
Capitalized software costs, expected useful life, maximum (in months)									36 months
Maximum [Member]
Extended Product Warranty Description									five years
Minimum [Member]
Extended Product Warranty Description									90 days