Computation of Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share [Abstract]
Earnings from continuing operations	$ 22,096	$ 7,438	$ 34,398	$ 17,130
Earnings from discontinued operation		131		133
Net Earnings	$ 22,096us-gaap_NetIncomeLoss	$ 7,569us-gaap_NetIncomeLoss	$ 34,398us-gaap_NetIncomeLoss	$ 17,263us-gaap_NetIncomeLoss
Weighted average shares	61,129	62,563	61,319	62,471
Basic Earnings Per Share:
Continuing Operations	$ 0.36	$ 0.12	$ 0.56	$ 0.27
Consolidated	$ 0.36us-gaap_EarningsPerShareBasic	$ 0.12us-gaap_EarningsPerShareBasic	$ 0.56us-gaap_EarningsPerShareBasic	$ 0.28us-gaap_EarningsPerShareBasic
Dilutive effect of common stock equivalents	1,147	1,372	1,213	1,470
Diluted weighted average common shares	62,276	63,935	62,532	63,941
Diluted Earnings Per Share:
Continuing Operations	$ 0.35	$ 0.12	$ 0.55	$ 0.27
Consolidated	$ 0.35us-gaap_EarningsPerShareDiluted	$ 0.12us-gaap_EarningsPerShareDiluted	$ 0.55us-gaap_EarningsPerShareDiluted	$ 0.27us-gaap_EarningsPerShareDiluted

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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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Amount of income (loss) from continuing operations attributable to the parent. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests.

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

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The amount of net income (loss) derived from continuing operations during 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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