Income Taxes	6 Months Ended
Mar. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	15. Income Taxes Consolidated income tax expense for the three and six months ended March 31, 2020 was $0.6 million and $2.0 million, respectively. Consolidated income tax expense for each of the three and six months ended March 31, 2019 was $0.6 million. The income tax expense for the three and six months ended March 31, 2020 and 2019 primarily reflects foreign withholding tax on rental income earned in Nigeria and Brunei. During the three and six months ended March 31, 2020 and 2019, a substantial portion of the Company’s rental activities were in international locations. The Company is currently unable to record any tax benefits for its tax losses in the U.S. and Canada due to the uncertainty surrounding its ability to utilize such losses in the future to offset taxable income.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-URI http://asc.fasb.org/topic&trid=2144680

Name:	us-gaap_IncomeTaxDisclosureTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration