Commitments (Tables)

12 Months Ended

Dec. 31, 2017

Leases [Abstract]

Future Minimum Lease Payments

Future minimum lease payments under non-cancelable operating leases are as follows ($ in thousands):

	Commitments
2018	$	491
2019	436
2020	441
2021	403
2022	327
2023	332
Thereafter	83
	$	2,513