XML 92 R75.htm IDEA: XBRL DOCUMENT v3.19.1
Income Taxes - Income Tax Expense (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]    
Current tax expense $ 2,152 $ 2,443
Deferred tax expense 135 1,283
Income tax expense 2,287 3,726
Income tax expense due to re-measurement of net deferred tax assets $ 752 $ 752