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Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2014 | Dec. 31, 2013
--- | --- | ---
Fair value |  |
Investments available-for-sale | $ 2,012 | $ 2,006
Municipal obligations |  |
Fair value |  |
Investments available-for-sale | 410 | 415
U.S. government security funds |  |
Fair value |  |
Investments available-for-sale | 985 | 983
Equity securities |  |
Fair value |  |
Investments available-for-sale | 617 | 608
Recurring basis | Level 1 - Quoted Prices in Active Markets for Identical Assets |  |
Fair value |  |
Investment securities | 1,004 | 971
Total assets measured at fair value on a recurring basis | 2,606 | 2,562
Recurring basis | Level 1 - Quoted Prices in Active Markets for Identical Assets | U.S. government security funds |  |
Fair value |  |
Investments available-for-sale | 985 | 983
Recurring basis | Level 1 - Quoted Prices in Active Markets for Identical Assets | Equity securities |  |
Fair value |  |
Investments available-for-sale | 617 | 608
Recurring basis | Level 2 - Significant Other Observable Inputs |  |
Fair value |  |
Total assets measured at fair value on a recurring basis | 410 | 415
Recurring basis | Level 2 - Significant Other Observable Inputs | Municipal obligations |  |
Fair value |  |
Investments available-for-sale | 410 | 415
Recurring basis | Total |  |
Fair value |  |
Investment securities | 1,004 | 971
Total assets measured at fair value on a recurring basis | 3,016 | 2,977
Recurring basis | Total | Municipal obligations |  |
Fair value |  |
Investments available-for-sale | 410 | 415
Recurring basis | Total | U.S. government security funds |  |
Fair value |  |
Investments available-for-sale | 985 | 983
Recurring basis | Total | Equity securities |  |
Fair value |  |
Investments available-for-sale | $ 617 | $ 608

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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 Amount of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading. + References Reference 1: 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26626-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Trading Securities -URI http://asc.fasb.org/extlink&oid=6526789 + Details
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