Basis of Presentation (Details 3) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Reconciliation of basic earnings per common share to diluted earnings per share
Net income available to common stockholders	$ 12,087	$ 4,795	$ 46,176
Basic weighted-average shares outstanding	48,899	48,536
Dilutive effect of potential common stock equivalents - stock options (in shares)	166	90
Diluted weighted-average shares outstanding	49,065	48,626
Earnings per common share:
Basic (in dollars per share)	$ 0.25	$ 0.10
Diluted (in dollars per share)	$ 0.25	$ 0.10

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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