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Shareholders' Equity and Stock Options (Details 2) (USD $) |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2013 $6.91-$13.83 [Member] | Dec. 31, 2013 $16.81-$18.20 [Member] | Dec. 31, 2013 $20.23-$30.24 [Member] | Dec. 31, 2013 $ 6.91-$30.24 [Member]
Summary of options outstanding segregated by ranges of exercise prices |  |  |  |  |  |  |
Total Outstanding Options, Options | 956,814 | 1,882,939 | 2,600,583 | 178,858 | 527,437 | 250,519 | 956,814
Total Outstanding Options, Weighted Average Option Price per Share |  | $ 14.73 |  | $ 13.58 | $ 17.17 | $ 20.95 | $ 17.49
Total Outstanding Options, Weighted Average Remaining Term |  |  |  | 3 years 1 month 6 days | 4 years 7 months 6 days | 6 years 1 month 6 days | 4 years 8 months 12 days
Vested and Exercisable Options | 314,445 | 1,161,703 |  | 119,543 | 187,955 | 6,947 | 314,445
Vested and Exercisable Options, Weighted Average Option Price per Share |  | $ 14.28 | $ 15.57 | $ 13.45 | $ 17.10 | $ 20.24 | $ 15.78
Vested and Exercisable Options, Weighted Average Remaining Term |  |  |  | 3 years 1 month 6 days | 4 years 2 months 12 days | 3 months 18 days | 3 years 8 months 12 days

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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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