Accounts Receivable (Tables)

6 Months Ended

Jun. 30, 2017

Allowance for Doubtful Accounts [Member]

Schedule of Accounts Receivable and Allowance for Doubtful Accounts

The following table summarizes the change in the allowance for doubtful accounts for the six-month period ended June 30, 2017:

	2017
Balance at January 1	$	1,115
Provision for uncollectible accounts		1,633
Charged to other accounts		—
Deductions		(383	)
Balance at June 30	$	2,365

Non-affiliates [Member]

Schedule of Accounts Receivable and Allowance for Doubtful Accounts

Accounts receivable, net, consists of the following at June 30, 2017 and December 31, 2016:

	2017			2016
Retail customers	$	15,210		$	17,511
Wholesale carriers		5,086			4,293
Other		4,309			4,373
		24,605			26,177
Less: allowance for doubtful accounts		(2,365	)		(1,115	)
Accounts receivable, net	$	22,240		$	25,062