Note 5 - Accounts Receivable (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

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

	March 31,			December 31,
	2022			2021
Gross accounts receivable	$	89,565		$	86,625
Unearned income		(4,103	)		(4,033	)
Allowance for doubtful accounts		(12,742	)		(11,997	)
	$	72,720		$	70,595
Reported as:
Current trade receivables	$	49,076		$	46,918
Current unearned interest income		(2,727	)		(2,678	)
Long-term trade receivables		27,747			27,710
Long-term unearned interest income		(1,376	)		(1,355	)
	$	72,720		$	70,595

Contractual Commitments, Net of Allowance For Doubtful Accounts To Be Received Maturity [Table Text Block]

			March 31,
	Total		2022		2023		2024		2025		2026
Current financing receivables, net of allowance of $6,068	$	24,946	$	24,946	$	—	$	—	$	—	$	—
Long-term financing receivables, net of allowance of $408		27,747		—		19,699		7,923		125		—
	$	52,693	$	24,946	$	19,699	$	7,923	$	125	$	—

Accounts Receivable, Allowance for Credit Loss [Table Text Block]

Balance at January 1, 2021	$	18,490
Write-offs		(6,230	)
Recovery		(263	)
Balance at December 31, 2021		11,997
Write-offs		(259	)
Provision		1,004
Balance at March 31, 2022	$	12,742