Supplemental Financial Information - Earnings (loss) Per Share Excluded weighted average (Details) - shares shares in Thousands	3 Months Ended	6 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2019
Stock options
Shares excluded in the computation of loss from continuing operations per share
Shares excluded in the computation of loss from continuing operations per share	5,039	4,152	4,161	5,050
Restricted stock units
Shares excluded in the computation of loss from continuing operations per share
Shares excluded in the computation of loss from continuing operations per share	438	137	143	282

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Name:	us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration