NOTE 13. OTHER SUPPLEMENTAL INFORMATION

Cash, Cash Equivalents and Restricted Cash

Cash, cash equivalents and restricted cash are recorded in our unaudited condensed consolidated balance sheet as follows:

	September 30, 2018		December 31, 2017
Cash and cash equivalents	$	20,341	$	3,613
Restricted cash		—		41
Total cash, cash equivalents and restricted cash	$	20,341	$	3,654

Our restricted cash served as collateral for labor claims, office rental and cash in another country restricted by exchange control regulations.

Accounts Receivable, net

Total accounts receivable, net is comprised of the following:

	September 30, 2018			December 31, 2017
Trade receivables	$	93,370		$	82,115
Other receivables		4,042			2,104
Total accounts receivable		97,412			84,219
Less: allowance for doubtful accounts		(19,130	)		(12	)
Total accounts receivable, net		78,282			84,207
Current accounts receivable, net		19,165			6,105
Long-term accounts receivable, net	$	59,117		$	78,102

Accrued Liabilities

Accrued liabilities are comprised of the following:

	September 30, 2018		December 31, 2017
Accrued payroll liabilities	$	2,232	$	2,781
Accrued interest		235		1,877
Other accrued liabilities		4,424		1,653
Total accrued liabilities	$	6,891	$	6,311

Other accrued liabilities primarily consist of accruals for project related expenses.

Supplemental Cash Flows Information

Supplemental cash flows information is as follows:

Noncash Transactions

Supplemental noncash transactions are as follows:

	As of September 30,
	2018		2017
Costs to issue stock included in prepaid expenses and other current assets	$	1,442	$	—
Costs for additions to property and equipment in accounts payable		26		113
Costs to issue debt included in accounts payable		1,096		775
Costs to issue stock included in accounts payable		995		—