Commitments and Contingent Liabilities - Schedule of Rent Expense (Details) - General and Administrative Expense - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018
Loss Contingencies [Line Items]
Rent expense	$ 256	$ 1,622	$ 1,519
Rent payments	$ 268	$ 1,257	$ 1,297