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Basis of Presentation (Details) (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 item | Dec. 31, 2013
Description of Business |  |  |  |
Number of operating segments |  |  | 3 us-gaap_NumberOfOperatingSegments |
Computation of basic and diluted earnings per share |  |  |  |
Net income for diluted earnings per share calculation | $ 18,241 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | $ 14,573 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | $ 29,490 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | $ 20,967 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Weighted average shares for basic earnings per share calculation | 19,811 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 19,961 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 19,815 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 19,966 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Dilutive effect of stock awards (in shares) | 676 us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment | 628 us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment | 691 us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment | 638 us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment
Weighted average shares for diluted earnings per share calculation | 20,487 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 20,589 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 20,506 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 20,604 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Basic net income per share (in dollars per share) | $ 0.92 us-gaap_EarningsPerShareBasic | $ 0.73 us-gaap_EarningsPerShareBasic | $ 1.49 us-gaap_EarningsPerShareBasic | $ 1.05 us-gaap_EarningsPerShareBasic
Diluted net income per share (in dollars per share) | $ 0.89 us-gaap_EarningsPerShareDiluted | $ 0.71 us-gaap_EarningsPerShareDiluted | $ 1.44 us-gaap_EarningsPerShareDiluted | $ 1.02 us-gaap_EarningsPerShareDiluted

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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=32703322&loc=d3e4984-109258 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.19) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.23) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 18 -Article 7 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 5 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 21 -Article 9 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 18 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 21 -Article 9 + Details
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
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