Commitments and Contingencies - Federal False Claims Act / Qui Tam Litigation (Details) - Federal False Claims Act / Qui Tam Litigation	12 Months Ended
Dec. 31, 2019 lawsuit person
Loss contingencies
Number of actions declined to intervene	2
Number of lawsuits pending	2
Number of former employees \| person	2
Godecke case
Loss contingencies
Number of lawsuits pending	1

Number of pending claims pertaining to a loss contingency.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14435-108349

Name:	us-gaap_LossContingencyPendingClaimsNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant