Income Taxes - Additional Information (Detail)
|9 Months Ended|
Sep. 30, 2019
|Internal Revenue Service [Member]|
|Income Tax Contingency [Line Items]|
|Open tax years||2011 2012 2013 2014|
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
No definition available.
Tax year that remains open to examination under enacted tax laws, in CCYY format.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef