Consolidated balance sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 208,802	$ 234,674
Short-term investments	728,898	607,902
Restricted cash	807	11,499
Trade receivables, net	93,567	96,699
Receivables and prepaid expenses	17,025	21,245
Inventories	24,427	27,422
Total current assets	1,073,526	999,441
Long-term assets:
Property and equipment, net	22,693	11,395
Field equipment, net	12,923	11,230
Right-of-use assets	18,267	19,009
Other long-term assets	12,086	10,908
Total long-term assets	65,969	52,542
Total assets	1,139,495	1,051,983
Current liabilities:
Trade payables	72,600	53,647
Other payables, lease liabilities and accrued expenses	70,002	59,965
Total current liabilities	142,602	113,612
Long-term liabilities:
Long-term debt, net	562,216	429,905
Deferred revenues	6,477	12,139
Long term leases	12,997	14,293
Employee benefit liabilities	4,543	5,171
Other long-term liabilities	166	337
Total long-term liabilities	586,399	461,845
Total liabilities	729,001	575,457
Commitments and contingencies
Shareholders’ equity:
Ordinary shares - No par value, Unlimited shares authorized; Issued and outstanding: 103,971,263 shares and 102,334,276 shares at December 31, 2021 and December 31, 2020 respectively;	0	0
Additional paid-in capital	1,099,589	1,111,435
Accumulated other comprehensive income (loss)	(3,169)	(3,832)
Retained earnings (accumulated deficit)	(685,926)	(631,077)
Total shareholders’ equity	410,494	476,526
Total liabilities and shareholders’ equity	$ 1,139,495	$ 1,051,983