Leases (Tables)

3 Months Ended

Mar. 31, 2019

Leases [Abstract]

Schedule of lease cost

	Three Months Ended
(Dollars in thousands)	March 31, 2019
Operating lease cost	$	414
Short-term lease cost		39
Variable lease cost		14
Total lease cost	$	467

Schedule of maturities of lease liabilities

	As of
(Dollars in thousands)	March 31, 2019
2019	$	1,131
2020		1,392
2021		758
2022		236
2023		109
Thereafter		249
Total		3,875
Imputed interest		(193)
Lease liabilities	$	3,682