OPERATING LEASES (Tables)

12 Months Ended

Dec. 31, 2020

OPERATING LEASES

Schedule of operating leases

The following table sets forth data regarding the Company’s operating leases for the year ended December 31, 2019 and 2020:

	December 31,
(U.S. dollars in thousands)	2019			2020
Operating lease costs	$	1,219		$	1,382
Cash paid for amounts included in the measurement of lease liabilities		1,329			1,289
Weighted average remaining lease term (in years)		10.5			9.5
Weighted average discount rate		12.7	%		12.7	%

Schedule of maturity analysis of operating leases

The following table sets forth a maturity analysis of the Company’s operating lease liabilities as of December 31, 2020:

(U.S. dollars in thousands)	December 31, 2020
2021	$	1,233
2022	$	1,111
2023	$	927
2024	$	838
2025 and thereafter	$	6,222
Total undiscounted cash flows	$	10,331
Less: imputed interest	$	4,444
Present value of operating lease liabilities	$	5,887