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Shareholders' Equity (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2012 | Mar. 06, 2013
Schedule of dividend declare |  |
Dividend Per share |  | $ 0.05
Record Date | Mar. 18, 2013 |
Payment Date | Mar. 28, 2013 |
Record Date One [Member] |  |
Schedule of dividend declare |  |
Dividend Per share | 0.025 |
Record Date | Sep. 15, 2011 |
Payment Date | Sep. 30, 2011 |
Payments | 363 |
Record Date Two [Member] |  |
Schedule of dividend declare |  |
Dividend Per share | 0.025 |
Record Date | Dec. 15, 2011 |
Payment Date | Dec. 30, 2011 |
Payments | 365 |
Record Date Three [Member] |  |
Schedule of dividend declare |  |
Dividend Per share | 0.035 |
Record Date | Mar. 20, 2012 |
Payment Date | Mar. 30, 2012 |
Payments | 512 |
Record Date Four [Member] |  |
Schedule of dividend declare |  |
Dividend Per share | 0.035 |
Record Date | Jun. 15, 2012 |
Payment Date | Jun. 29, 2012 |
Payments | 512 |
Record Date Five [Member] |  |
Schedule of dividend declare |  |
Dividend Per share | 0.045 |
Record Date | Sep. 14, 2012 |
Payment Date | Sep. 28, 2012 |
Payments | 664 |
Record Date Six [Member] |  |
Schedule of dividend declare |  |
Dividend Per share | 0.045 |
Record Date | Dec. 14, 2012 |
Payment Date | Dec. 28, 2012 |
Payments | 772 |

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- Definition Date the declared dividend will be paid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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- Definition The per share amount of a dividend declared, but not paid, as of the financial reporting date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 32 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph a -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 5 -Article 9 + Details
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