Income Taxes - Summary of Tax Years that Remain Open and Subject to Examination by The Tax Authorities (Details)	12 Months Ended
	Dec. 31, 2018
U.S. Federal | Earliest Tax Year
Income Tax Contingency [Line Items]
Open Tax Year	2015
U.S. Federal | Latest Tax Year
Income Tax Contingency [Line Items]
Open Tax Year	2018
State | Earliest Tax Year
Income Tax Contingency [Line Items]
Open Tax Year	2014
State | Latest Tax Year
Income Tax Contingency [Line Items]
Open Tax Year	2018