CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
CURRENT ASSETS:
Cash and cash equivalents	$ 82,104	$ 99,780
Short-term investments	104,453	119,854
Restricted cash	2,129	267
Trade receivables	23,000	6,339
Receivables and prepaid expenses	5,559	10,084
Inventories	24,642	25,549
Total current assets	241,887	261,873
LONG-TERM ASSETS:
Property and equipment, net	9,361	9,812
Field equipment, net	8,948	8,808
Severance pay fund	104	88
Other long-term assets	1,978	1,500
Total long-term assets	20,391	20,208
TOTAL ASSETS	262,278	282,081
CURRENT LIABILITIES:
Trade payables	14,143	18,356
Other payables and accrued expenses	26,842	18,526
Total current liabilities	40,985	36,882
LONG-TERM LIABILITIES:
Long-term loan, net of discount and issuance costs	97,049	96,231
Employee benefit liabilities	2,489	2,590
Other long-term liabilities	5,070	4,033
Total long-term liabilities	104,608	102,854
TOTAL LIABILITIES	145,593	139,736
COMMITMENTS AND CONTINGENCIES	0	0
SHAREHOLDERS' EQUITY:
Ordinary shares no par value, unlimited shares authorized; issued and outstanding: 89,355,679 shares and 87,066,446 shares at September 30, 2017 (unaudited) and December 31, 2016, respectively	0	0
Additional paid-in capital	689,460	664,154
Accumulated other comprehensive loss	(1,462)	(1,883)
Accumulated deficit	(571,313)	(519,926)
Total shareholders' equity	116,685	142,345
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 262,278	$ 282,081