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Capital Structure | 3 Months Ended
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Sep. 30, 2018
Capital Structure [Abstract] |
Capital Structure | 11. Capital structure The following table presents a reconciliation between the number of shares, net of treasury, presented in the unaudited condensed consolidated statement of changes in equity during the three months ended September 30, 2018 and 2017, respectively, and the number of shares, net of treasury, excluding non-vested equity shares that have not vested during the three months ended September 30, 2018 and 2017, respectively:
| September 30, | September 30,
| 2018 | 2017
Number of shares, net of treasury: |  |
Statement of changes in equity | 56,833,925 | 56,927,696
Less: Non-vested equity shares that have not vested (Note 13) | 860,817 | 1,007,182
Number of shares, net of treasury excluding non-vested |  |
equity shares that have not vested | 55,973,108 | 55,920,514

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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