Accounts Receivable

12 Months Ended

Dec. 31, 2017

Accounts Receivable

Accounts Receivable

Note 2: Accounts Receivable

Accounts receivable, net consists of the following:

December 31,	2017			2016
(in thousands)
Trade receivables:
Billed	$	296,588		$	122,216
Unbilled		68,494			39,223
Other receivables		17,242			10,280
Total		382,324			171,719
Less: allowance for doubtful accounts		(4,471	)		(2,553	)
Accounts receivable, net	$	377,853		$	169,166

Trade receivables relate to revenues generated from equipment and services, for which credit is extended based on our evaluation of the customer’s credit worthiness. Unbilled receivables represent revenues earned but not billed to the customer until future dates, usually within one month. Other receivables consists primarily of net amounts receivable from an agent, that operates internationally, as well as amounts due from the favorable resolution of state tax audits and rebates due from suppliers.

Changes in the Company’s allowance for doubtful accounts are as follows:

Years Ended December 31,	2017			2016
(in thousands)
Beginning balance	$	2,553		$	10,605
Bad debt expense (reduction)		1,441			6,021
Accounts written-off		(105	)		(14,101	)
Recoveries		582			28
Ending balance	$	4,471		$	2,553