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Amortized Cost and Market Value of Available-For-Sale Securities by Major Security Type (Detail) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2013 | Jun. 30, 2012
--- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | $ 241,032 | $ 229,967
Market | 301,527 | 296,277
State and municipal debt securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | 179,463 | 161,761
Market | 179,764 | 162,740
Corporate debt securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | 12,804 | 22,693
Market | 12,817 | 22,802
Foreign corporate debt securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | 4,484 | 6,080
Market | 4,490 | 6,110
Certificates of deposit |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | 14,809 | 9,961
Market | 14,809 | 9,961
Equity Securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost | 29,472 | 29,472
Market | $ 89,647 | $ 94,664

X
- Definition This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References No definition available. + Details
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X
- Definition This item represents the cost of equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments for other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References No definition available. + Details
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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562 + Details
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- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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