CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash	$ 24,463	$ 42,582
Accounts receivable - trade, less allowance for doubtful accounts of $131 and $143, respectively	9,456	5,603
Prepaid expenses and other current assets	1,045	831
Total current assets	61,844	69,561
Property and equipment, net	12,774	10,391
Other assets:
Amortizable intangible assets, net	2,000	2,089
Other intangible assets	260	260
Total other assets	2,260	2,349
Total assets	76,878	82,301
Current liabilities:
Accounts payable - trade	5,903	5,495
Accrued compensation and benefits	3,302	2,905
Current portion of long-term debt with affiliate	117	113
Other current liabilities	1,594	954
Total current liabilities	10,916	9,467
Long-term liabilities:
Long-term debt with affiliate, net of current portion	21,330	21,418
Revolving credit facility with affiliate	3,947	3,921
Total long-term liabilities	25,277	25,339
Total liabilities	36,193	34,806
Commitments and contingencies (Note 11)
Stockholders' equity:
Common stock, $0.00025 par value; 50,000,000 shares authorized; 12,807,520 shares and 12,621,781 shares issued and outstanding as of September 30, 2018 and December 31, 2017	2	2
Additional paid-in capital	153,649	150,424
Accumulated deficit	(112,623)	(103,066)
Accumulated other comprehensive (loss) income	(343)	135
Total stockholders' equity	40,685	47,495
Total liabilities and stockholders' equity	76,878	82,301
U.S.
Current assets:
Inventories	26,646	19,498
International
Current assets:
Inventories	$ 234	$ 1,047

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.