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Fair Value Measurements (Details 1) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
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Fair Value, Level 1 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions |  |
Cash and Cash Equivalents, Fair Value Disclosure | $ 37,499 | $ 30,423
Available-for-sale Securities, Fair Value Disclosure | 91,077 | 192,234
Investments, Fair Value Disclosure | 128,576 | 222,657
Other Liabilities, Fair Value Disclosure | 0 | 0
Liabilities, Fair Value Disclosure | 0 | 0
Fair Value, Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions |  |
Cash and Cash Equivalents, Fair Value Disclosure | 0 | 0
Available-for-sale Securities, Fair Value Disclosure | 552 | 551
Investments, Fair Value Disclosure | 552 | 551
Other Liabilities, Fair Value Disclosure | 0 | 0
Liabilities, Fair Value Disclosure | 0 | 0
Fair Value, Level 3 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions |  |
Cash and Cash Equivalents, Fair Value Disclosure | 0 | 0
Available-for-sale Securities, Fair Value Disclosure | 0 | 0
Investments, Fair Value Disclosure | 0 | 0
Other Liabilities, Fair Value Disclosure | 27,710 | 29,920
Liabilities, Fair Value Disclosure | 27,710 | 29,920
Fair Value, Total |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions |  |
Cash and Cash Equivalents, Fair Value Disclosure | 37,499 | 30,423
Available-for-sale Securities, Fair Value Disclosure | 91,629 | 192,785
Investments, Fair Value Disclosure | 129,128 | 223,208
Other Liabilities, Fair Value Disclosure | 27,710 | 29,920
Liabilities, Fair Value Disclosure | $ 27,710 | $ 29,920

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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 Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 + Details
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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Available-for-Sale Securities -URI http://asc.fasb.org/extlink&oid=6505594 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Trading Securities -URI http://asc.fasb.org/extlink&oid=6526789 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Subparagraph a, f, g -Article 7 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 35 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=27723805&loc=d3e24584-111560 + Details
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- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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- Definition Fair value portion of other liabilities. + References No definition available. + Details
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