ACCOUNTS RECEIVABLE, NET OF ALLOWANCE

12 Months Ended

Dec. 31, 2021

Receivables [Abstract]

ACCOUNTS RECEIVABLE, NET OF ALLOWANCE

3.ACCOUNTS RECEIVABLE, NET OF ALLOWANCE

Long-term accounts receivable, net, consisted of the following at the dates indicated (in thousands):

	December 31, 2021			December 31, 2020
Customer receivables	$	154,664		$	154,903
Unearned finance income		(14,319	)		(16,022	)
Allowance for doubtful accounts		(5,816	)		(5,711	)
Accounts receivable, net of allowance		134,529			133,170
Less: Current portion, net of allowance		62,220			57,869
Long-term portion, net of allowance	$	72,309		$	75,301

Activity in the allowance for doubtful accounts was as follows (in thousands):

	December 31, 2021			December 31, 2020
Balance, beginning of period	$	5,711		$	5,884
Provision for doubtful accounts		6,354			6,275
Charge-offs, net		(6,249	)		(6,267	)
Amounts related to assets held for sale		—			(181	)
Balance, end of period	$	5,816		$	5,711

Management evaluates customer receivables for impairment based upon its historical experience, including the age of the receivables and the customers’ payment histories.