Related Party Transactions - Additional Information (Details) - Black Knight Advisory Services, LLC - USD ($) $ in Thousands				3 Months Ended			9 Months Ended
	Jan. 31, 2019	Nov. 30, 2018	Jul. 01, 2018	Mar. 31, 2019	Sep. 30, 2018	Apr. 01, 2018	Sep. 29, 2019	Sep. 30, 2018	Oct. 06, 2015
Related Party Transaction [Line Items]
Management consulting agreement, termination date		Nov. 30, 2018
Annual fee as percentage of EBITDA			3.00%
Management fee paid				$ 705		$ 749
Management consulting agreement termination payment	$ 4,560
General and Administrative Expenses
Related Party Transaction [Line Items]
Black Knight annual consulting expense					$ 139			$ 587
Common Class B Units
Related Party Transaction [Line Items]
Common unit, granted									1,500,024
Common Class B Units | Maximum
Related Party Transaction [Line Items]
Exchange period upon termination agreement							90 days
Common Class B Units | General and Administrative Expenses
Related Party Transaction [Line Items]
Non-cash compensation expense (income)					$ 1,240			$ 3,094