Condensed Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 29,727	$ 2,307
Accounts receivable, net	3,170	1,909
Amounts due from related parties	486	564
Inventory	5,069	4,176
Prepaid expenses and other current assets	1,050	190
Total current assets	39,502	9,146
Property and equipment, net	1,920	1,654
Intangible assets, net		132
Other assets	50	29
Total assets	41,472	10,961
Current liabilities:
Accounts payable	1,502	1,162
Accrued liabilities	1,811	1,755
Amounts due to related parties	1,359	3,812
Deferred income on shipments to distributors	1,827	1,440
Current portion of long-term debt	3,884	1,175
Total current liabilities	10,383	9,344
Redeemable convertible preferred stock warrant liability		437
Deferred revenue		229
Long-term debt, net of current portion	4,218	6,739
Total liabilities	14,601	16,749
Commitments and contingencies
Redeemable convertible preferred stock, $0.0001 par value per share; zero and 68,080,000 shares authorized as of December 31, 2016 and 2015, zero and 2,486,199 shares issued and outstanding as of December 31, 2016 and 2015		64,642
Stockholders' equity (deficit):
Preferred stock, $0.0001 par value per share; 5,000,000 and zero shares authorized as of December 31, 2016 and 2015 , zero shares issued and outstanding as of December 31, 2016 and 2015
Common stock, $0.0001 par value per share; 100,000,000 and 175,000,000 shares authorized as of December 31, 2016 and 2015, 12,498,128 and 3,015,281 shares issued and outstanding as of December 31, 2016 and 2015	1
Additional paid-in capital	123,309	9,301
Accumulated deficit	(96,439)	(79,731)
Total stockholders' equity (deficit)	26,871	(70,430)
Total liabilities, redeemable convertible preferred stock and stockholders' equity (deficit)	$ 41,472	$ 10,961

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).

Name:	us-gaap_AccountsPayableCurrent
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.