Note 11 - Share-based Compensation - SARs Activity (Stock Appreciation Rights (SARs) (Details) - Stock Appreciation Rights (SARs) [Member]	Mar. 31, 2019 $ / shares shares
Balance, restricted share units (in shares) \| shares	2,485,000
Balance, weighted average grant date fair value (in dollars per share) \| $ / shares	$ 7.33
Balance, restricted share units (in shares) \| shares	2,485,000
Balance, weighted average grant date fair value (in dollars per share) \| $ / shares	$ 7.33

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant