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Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Basic EPS:
Net income	$ (954)	$ (13,821)	$ 5,250	$ 9,342	$ 9,134	$ 4,357	$ 5,431	$ 9,941	$ (183)	$ 28,863	$ 17,157
Weighted average shares outstanding									26,533	26,597	26,603
Basic EPS (in dollars per share)	$ (0.04)	$ (0.52)	$ 0.20	$ 0.35	$ 0.35	$ 0.16	$ 0.20	$ 0.38	$ (0.01)	$ 1.09	$ 0.64
Diluted EPS:
Weighted average shares outstanding									26,533	26,597	26,603
Dilutive stock options									0	68	110
Dilutive nonvested deferred shares									0	435	464
Diluted weighted average shares									26,533	27,100	27,177
Diluted EPS (in dollars per share)	$ (0.04)	$ (0.52)	$ 0.20	$ 0.35	$ 0.34	$ 0.16	$ 0.20	$ 0.37	$ (0.01)	$ 1.07	$ 0.63

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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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Nonvested equity-based payment awards that contain forfeitable rights to dividends or dividend equivalents (whether paid or unpaid) that result in incremental common shares.

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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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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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