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Investments - Summary of Unrealized Loss Position (Detail) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2014
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Schedule of Available-for-sale Securities [Line Items] |
Fair Value, Less than 12 Months | $ 7,658
Unrealized Losses, Less than 12 Months | 15
Fair Value, 12 Months or More |
Unrealized Losses, 12 Months or More |
Fair Value | 7,658
Unrealized Losses | 15
U.S. Treasury Securities, Obligations of U.S. Government Agencies and Municipals [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Fair Value, Less than 12 Months | 3,168
Unrealized Losses, Less than 12 Months | 4
Fair Value, 12 Months or More |
Unrealized Losses, 12 Months or More |
Fair Value | 3,168
Unrealized Losses | 4
Corporate Debt [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Fair Value, Less than 12 Months | 4,490
Unrealized Losses, Less than 12 Months | 11
Fair Value, 12 Months or More |
Unrealized Losses, 12 Months or More |
Fair Value | 4,490
Unrealized Losses | $ 11

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- Definition Amount of accumulated pre-tax unrealized loss on securities classified as available-for-sale that have been in a loss position for twelve months or longer recognized in Accumulated Other Comprehensive Income (AOCI). + References No definition available. + Details
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- Definition This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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- Definition This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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