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Investments - Cost or Amortized Cost and Fair Value of Securities Available for Sale (Detail) (USD $) In Thousands, unless otherwise specified | 9 Months Ended
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Sep. 30, 2013
Schedule of Available-for-sale Securities [Line Items] |
Cost or Amortized Cost | $ 370,161
Gross Unrealized Gains | 2,590
Gross Unrealized Losses | (3,385)
Fair Value | 369,366
US Government and Agency Obligations [Member] | Fixed Maturities [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Cost or Amortized Cost | 105,265
Gross Unrealized Gains | 2
Gross Unrealized Losses | (735)
Fair Value | 104,532
Corporate Bonds [Member] | Fixed Maturities [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Cost or Amortized Cost | 99,659
Gross Unrealized Gains | 263
Gross Unrealized Losses | (944)
Fair Value | 98,978
Mortgage-Backed and Asset-Backed Securities [Member] | Fixed Maturities [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Cost or Amortized Cost | 95,220
Gross Unrealized Gains | 125
Gross Unrealized Losses | (351)
Fair Value | 94,994
Common Stock [Member] | Equity Securities [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Cost or Amortized Cost | 19,126
Gross Unrealized Gains | 1,214
Gross Unrealized Losses | (283)
Fair Value | 20,057
Mutual Funds [Member] | Equity Securities [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Cost or Amortized Cost | 50,891
Gross Unrealized Gains | 986
Gross Unrealized Losses | (1,072)
Fair Value | $ 50,805

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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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- Definition Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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- Definition Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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