Capital Structure

3 Months Ended

Sep. 30, 2016

Capital Stucture [Abstract]

Capital Structure

10. Capital structure

     The following table presents 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, 2016 and 2015, 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, 2016 and 2015, respectively:

	September 30,		September 301
	2016		2015
Number of shares, net of treasury:
Statement of changes in equity	52,521,345		47,322,702
Less: Non-vested equity shares that have not vested (Note 12)	(904,356	)	(589,447	)
Number of shares, net of treasury excluding non-vested
equity shares that have not vested	51,616,989		46,733,255

Common stock repurchases

Executed under share repurchase authorizations

     In February 2016, the Company's Board of Directors approved the replenishment of its share repurchase authorization to repurchase up to an aggregate of $100 million of common stock. The authorization has no expiration date. On June 29, 2016, the Company adopted a Rule 10b5-1 trading plan for the purpose of repurchasing approximately $50 million of its common stock, which was included within the original share repurchase authorization. During the three months ended September 30, 2016, the Company repurchased 3,137,609 shares for approximately $31.6 million under its share repurchase authorization. The Company did not repurchase any of its shares during the three months ended September 30, 2015.