Contingent Liabilities and Commitments (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 21, 2019
Commitments And Contingencies [Line Items]
Other commitment	$ 51,284
Purchase commitment, period (in years)	5 years
Purchase obligation	$ 26,682
Operating leases, rent expense, net	1,213	$ 1,146	$ 970
Inventories
Commitments And Contingencies [Line Items]
Payment of purchase commitment	9,965
Initial Build Of Production Suite | Minimum
Commitments And Contingencies [Line Items]
Other commitment	300
Annual Production Suite Fees | Minimum
Commitments And Contingencies [Line Items]
Other commitment	3,000
Annual Production Suite Fees | Maximum
Commitments And Contingencies [Line Items]
Other commitment	4,000
Specialty Pharma Obligation
Commitments And Contingencies [Line Items]
Purchase obligation	$ 15,308
Threatened Litigation | Subsequent event
Commitments And Contingencies [Line Items]
Loss contingency, estimate of possible loss				$ 1,700