XML 87 R70.htm IDEA: XBRL DOCUMENT v3.19.1
Income Taxes - Components of Net Deferred Tax Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]    
In-process research and development not subject to future amortization for tax purposes $ 1,785 $ 3,438
Gross deferred tax liability $ 1,785 $ 3,438