Commitments (Tables)

12 Months Ended

Dec. 31, 2016

Commitments And Contingencies Disclosure [Abstract]

Schedule of Future Minimum Lease Payments Under Operating Leases

Future minimum lease payments under operating leases as of December 31, 2016 are as follows:

(U.S. Dollars, in thousands)
2017	$	3,009
2018		2,332
2019		1,608
2020		1,320
2021		108
Thereafter		—
Total	$	8,377