Consolidated and Combined Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2019	Dec. 31, 2018
Predecessor | UPH
Common stock, par value
Common stock, shares authorized		1,000
Common stock, shares issued		1,000
Common stock, shares outstanding		1,000
Predecessor | NPM
Common stock, par value
Common stock, shares authorized		200
Common stock, shares issued		200
Common stock, shares outstanding		200
Class A
Common stock, par value	$ 0.01
Common stock, shares authorized	500,000,000
Common stock, shares issued	5,285,904
Common stock, shares outstanding	5,285,904
Class B
Common stock, par value	$ 0.01
Common stock, shares authorized	27,206
Common stock, shares issued	27,206
Common stock, shares outstanding	27,206