Net Loss per Share Attributable to Common Stock - Narrative (Details)	12 Months Ended
Dec. 31, 2019 USD ($) class	Aug. 02, 2017
Earnings Per Share [Abstract]
Number of classes of stock \| class	1
Conversion basis		1
Dilutive securities, effect on basic earnings per share, dilutive convertible securities \| $	$ 0

Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from the assumed exercise of dilutive convertible securities excluding adjustments related to ESOP convertible preferred stock, stock options, and restrictive stock units.

No definition available.

Name:	us-gaap_DilutiveSecuritiesEffectOnBasicEarningsPerShareOther
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration