Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I)
-URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319

Name:	us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Income Taxes - Summary of Reconciliation Tax Rates (Parenthetical) (Details)	3 Months Ended	7 Months Ended	12 Months Ended
	Feb. 28, 2019	Dec. 31, 2017	May 31, 2018	May 31, 2017
Income Taxes [Line Items]
Effective income tax rate reconciliation, at federal statutory income tax rate, percent	21.00%	35.00%	29.20%	35.00%
2018 [Member]
Income Taxes [Line Items]
Effective income tax rate reconciliation, at federal statutory income tax rate, percent			29.20%
2019 [Member]
Income Taxes [Line Items]
Effective income tax rate reconciliation, at federal statutory income tax rate, percent	21.00%