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Stock Repurchase (Details) (USD $) | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 28, 2013 | Mar. 28, 2012 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Sep. 28, 2012 | Sep. 21, 2012
Stock Repurchase (Textual) [Abstract] |  |  |  |  |  |  |
Stock repurchase in cash |  |  | $ 25,432,000 | $ 4,778,000 | $ 3,415,000 |  |
Stock repurchase from issued shares of series A nonconvertible |  |  | 0 | 0 |  |  |
Stock Repurchase (Additional Textual) [Abstract] |  |  |  |  |  |  |
Repurchase common stock held by promoter, one |  | 2,485,929 |  |  |  |  |
Repurchase common stock held by promoter, two |  | 500,000 |  |  |  |  |
Repurchase share price per share |  | $ 20 |  |  |  |  |
Total consideration |  | 59,700,000 |  |  |  |  |
Non-Voting Redeemable Preferred Stock with a liquidation preference |  |  | $ 1,000 |  |  |  |
Professional and legal fees |  | 514,000 |  |  |  |  |
Redemption of outstanding shares of Series A Nonconvertible, Non-Voting Redeemable Preferred Stock |  |  |  |  |  |  | 34,800,000
Decrease in dividend obligation after redemption of preferred stock |  |  |  |  |  | 870,000 |
Dividend rate on preferred stock paid semi annually | 5.00% |  |  |  |  |  |
Series A Nonconvertible Non Voting Redeemable Preferred Stock [Member] |  |  |  |  |  |  |
Stock Repurchase (Textual) [Abstract] |  |  |  |  |  |  |
Stock repurchase from issued shares of series A nonconvertible |  |  | 34,800 |  |  |  |
Cash [Member] |  |  |  |  |  |  |
Stock Repurchase (Textual) [Abstract] |  |  |  |  |  |  |
Stock repurchase in cash |  |  | $ 24,900,000 |  |  |  |

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- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -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. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3291-108585 + Details
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- Definition The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph d -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(d)(1)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 4, 6 -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. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644 + Details
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