ACCOUNTS RECEIVABLE, NET OF ALLOWANCE

6 Months Ended

Jun. 30, 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):

	June 30, 2021			December 31, 2020
Customer receivables	$	156,102		$	154,903
Unearned finance income		(15,261	)		(16,022	)
Allowance for doubtful accounts		(5,581	)		(5,711	)
Accounts receivable, net of allowance		135,260			133,170
Less: Current portion, net of allowance		58,661			57,869
Long-term portion, net of allowance	$	76,599		$	75,301

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

	June 30, 2021			December 31, 2020
Balance, beginning of period	$	5,892		$	5,884
Provision for doubtful accounts		3,519			6,275
Charge-offs, net		(3,830	)		(6,267	)
Amounts related to assets held for sale		—			(181	)
Balance, end of period	$	5,581		$	5,711

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