Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 74,598	$ 107,004
Short-term investments	126,225
Prepaid expenses and other current assets	3,169	5,027
Total current assets	203,992	112,031
Property and equipment, net	8,991	4,711
Other assets	148	104
Restricted cash		100
Total assets	213,131	116,946
Current liabilities:
Accounts payable	5,635	2,777
Accrued compensation and benefits	3,161	2,366
Accrued and other liabilities	10,405	2,580
Total current liabilities	19,201	7,723
Other long-term liabilities	779	322
Total liabilities	19,980	8,045
Commitments and contingencies (Note 14)
Stockholders' equity:
Preferred stock, $0.0001 par value; 5,000,000 shares authorized as of December 31, 2016 and December 31, 2015, respectively; no shares issued and outstanding as of December 31, 2016 and December 31, 2015, respectively.
Common stock, $0.0001 par value; 300,000,000 shares authorized as of December 31, 2016 and December 31, 2015, respectively; 47,309,422 and 25,964,886 shares issued and outstanding as of December 31, 2016 and December 31, 2015, respectively.	5	3
Additional paid-in capital	407,092	210,386
Accumulated deficit	(213,875)	(101,488)
Accumulated other comprehensive loss	(71)
Total stockholders' equity	193,151	108,901
Total liabilities and stockholders' equity	$ 213,131	$ 116,946

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 of expenses incurred but not yet paid nor invoiced, and liabilities classified as other.

+ References

No definition available.