Organization and Description of Business (Details) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
	Oct. 31, 2018 USD ($) $ / shares shares	Dec. 31, 2015 platform
Subsidiary, Sale of Stock [Line Items]
Number of operating platforms consolidated | platform		2
Consideration received on stock transaction | $	$ 109.4
IPO
Subsidiary, Sale of Stock [Line Items]
Number of shares issued in stock transaction (in shares) | shares	7,840,908
Price per share of stock transaction (in dollars per share) | $ / shares	$ 15.00
Underwriters' Option
Subsidiary, Sale of Stock [Line Items]
Number of shares issued in stock transaction (in shares) | shares	1,022,727
Price per share of stock transaction (in dollars per share) | $ / shares	$ 1.05