Income Taxes (Details Textual) - USD ($)	1 Months Ended	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Line Items]
Statutory tax rate		12.49945%	12.50%	12.50%
Increase (decrease) in income tax provision		$ (42,282,000)	$ (7,169,000)
Interest and penalties could change by up to		500,000
Tax cost associated with Tax Cuts and Jobs Act			3,513,000
Income tax provision effect of cross-border merger		0	265,000	$ 9,773,000
Income tax provision effect of transfer of intellectual property		0	0	938,000
Unrecognized tax benefits		4,597,000	3,349,000	1,565,000
Income tax penalties and interest expense		725,000	304,000	26,000
Income tax penalties and interest accrued		1,057,000	331,000
Unremitted earnings		2,798,000
Deferred tax assets, tax credit carryforwards, research		7,555,000	5,272,000
Current deferred tax liabilities			518,000
Research tax credit utilized			4,266,000
Income tax charge		(17,893,000)	24,389,000	31,558,000
Tax-related prepaid expenses	$ 986,000			814,000
Deferred tax assets	$ 13,102,000	23,029,000	3,877,000	10,342,000
Deferred tax amortized rate	7.00%
Income tax deferred charge				11,156,000
Income tax provision related to cross-border merger			4,266,000
Tax charge due to remeasurement		274,000	$ 3,513,000	0
FSC
Income Taxes [Line Items]
Net operating loss carryforwards				$ 10,365,000
U.S. Holdings
Income Taxes [Line Items]
Net operating loss carryforwards		15,475,000
Ireland
Income Taxes [Line Items]
Statutory tax rate			12.50%	12.50%
Net operating loss carryforwards		72,453,000
Gross research tax credit		633,000
Tax relief amount		8,500,000
France
Income Taxes [Line Items]
Net operating loss carryforwards		3,259,000
Gross research tax credit		6,922,000	$ 4,754,000
Income tax charge	$ 14,088,000
Removal of operating loss carryforwards			111,495,000
United States
Income Taxes [Line Items]
Net operating loss carryforwards		$ 25,840,000
Intellectual Property
Income Taxes [Line Items]
Deferred tax assets, intangible asset			$ 7,954,000