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Common Stock (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 vote | Dec. 31, 2012 | Dec. 31, 2011
Common Stock |  |  |
Number of votes on each share of common stock | 1 |  |
Common stock outstanding (in shares) | 55,570,361 | 55,091,561 |
Preferred stock issued (in shares) | 0 | 0 |
Preferred stock outstanding (in shares) | 0 | 0 |
Common stock issued on exercise of stock options (in shares) |  | 317,600 | 468,000
Exercise price of options exercised (in dollars per share) |  | $ 1.60 | $ 1.60
Proceeds from common stock issued on exercise of stock options | $ 848 | $ 508 | $ 749
Cash proceeds received on exercise of stock options for which shares were not issued till date | 18 | 8 | 3
$1.60 |  |  |
Common Stock |  |  |
Common stock issued on exercise of stock options (in shares) | 360,600 |  |
Exercise price of options exercised (in dollars per share) | $ 1.60 |  |
$2.37 |  |  |
Common Stock |  |  |
Common stock issued on exercise of stock options (in shares) | 118,200 |  |
Exercise price of options exercised (in dollars per share) | $ 2.37 |  |
Employee stock options |  |  |
Common Stock |  |  |
Cash proceeds received on exercise of stock options for which shares were not issued till date | $ 18 | $ 8 | $ 3

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- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details
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- Definition The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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