Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_CommonStockSharesOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Common Stock (Details) - USD ($) $ in Thousands	Aug. 09, 2013	Jun. 30, 2018	Jun. 20, 2018	Sep. 30, 2017
Common Stock (Textual)
Common stock, shares outstanding		230,574,603		229,374,605
Return of capital distribution, description	The Company approved a distribution to its shareholders in the amount of $0.07 per share to be payable on September 20, 2013 to the holders of record of all the issued and outstanding shares of common stock of the Company as of the close of business on August 16, 2013.
Distribution Refund			$ 243,574