XML 57 R73.htm IDEA: XBRL DOCUMENT v3.19.3
Income Taxes - Components of Income Tax Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Income Tax Disclosure [Abstract]          
Current state income tax expense     $ 38   $ 0
Deferred federal income tax expense     0   0
Total income tax expense $ 38 $ 0 $ 38 $ 0 $ 0