CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents	$ 246,692	$ 101,318
Restricted deposit	407	253
Prepaid expenses and other current assets	1,196	672
TOTAL CURRENT ASSETS	248,295	102,243
NON-CURRENT ASSETS
Property and equipment, net	929	948
Restricted deposit	51	51
Other non-current assets	2,777	317
TOTAL ASSETS	252,052	103,559
CURRENT LIABILITIES:
Accounts payable and accrued expenses	5,942	8,540
Employee related accrued expenses	3,334	4,925
Other current liabilities	1,001
TOTAL CURRENT LIABILITIES	10,277	13,465
NON-CURRENT LIABILITIES:
Long-term lease liability	2,184
TOTAL NON-CURRENT LIABILITIES	2,184
TOTAL LIABILITIES	12,461	13,465
COMMITMENTS AND CONTINGENCIES (Note 13)
SHAREHOLDERS’ EQUITY:
Ordinary shares, NIS 0.01 par value; 100,000,000 shares authorized at March 31, 2019 and December 31, 2018; 20,758,348 and 16,214,883 shares issued and outstanding as of March 31, 2019 and December 31, 2018, respectively	56	44
Additional paid-in capital	383,850	212,921
Accumulated deficit	(144,315)	(122,871)
TOTAL SHAREHOLDERS’ EQUITY	239,591	90,094
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$ 252,052	$ 103,559

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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

- Definition

Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.