XML 87 R73.htm IDEA: XBRL DOCUMENT
v3.19.1

Shareholders' Equity - Share Lending Agreement (Details) | 1 Months Ended
--- | ---
Jul. 31, 2018 $ / shares shares
Equity [Abstract] |
Borrowed shares, number issued (in shares) | shares | 7,479,431
Borrowed shares, public offering price per share (in usd per share) | $ / shares | $ 13.37

X
- References No definition available. + Details
Name: | us-gaap_EquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Per share or per unit amount of equity securities issued. + References No definition available. + Details
Name: | us-gaap_SharesIssuedPricePerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares of stock issued attributable to transactions classified as other. + References No definition available. + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesOther
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration