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Significant Accounting Policies (Detail Textuals) (USD $) | 1 Months Ended | 12 Months Ended |  | 12 Months Ended
--- | --- | --- | --- | ---
Jan. 24, 2012 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Jan. 22, 2013 Subsequent Event | Dec. 31, 2012 Customer concentration risk Revenue Customer | Dec. 31, 2011 Customer concentration risk Revenue Customer | Dec. 31, 2010 Customer concentration risk Revenue Customer | Dec. 31, 2012 Customer concentration risk Accounts receivable Customer | Dec. 31, 2011 Customer concentration risk Accounts receivable Customer
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Common Stock, par value (in dollars per share) |  | $ 0.10 | $ 0.10 |  |  |  |  |  |  |
Common stock, shares authorized (in shares) |  | 349,000,000 | 349,000,000 |  |  |  |  |  |  |
Preferred Stock, par value (in dollars per share) |  | $ 0.10 | $ 0.10 |  |  |  |  |  |  |
Preferred Stock, shares authorized (in shares) |  | 1,000,000 | 1,000,000 |  |  |  |  |  |  |
Amount of dividend payable in cash per share |  |  |  |  | $ 0.10 |  |  |  |  |
Stock spilt ratio description | Board of Directors authorized a three-for-two stock split by issuance on March 9, 2012 of one additional common share for every two common shares held of record as of February 10, 2012. |  |  |  |  |  |  |  |  |
Stock split conversion ratio | three-for-two | three-for-two | three-for-two | three-for-two |  |  |  |  |  |
Customer concentration risk percentage |  |  |  |  |  |  | 12.00% | 15.00% |  | 19.00%
Number of customers accounted for concentration of credit risk |  |  |  |  |  |  | 1 | 1 |  | 1
Description of customers accounted for concentration of credit risk |  |  |  |  |  | no customers that accounted for more than 10 percent of revenues | one customer accounted for more than ten percent of the Company's revenues | one customer accounted for more than ten percent of the Company's revenues | no customer accounted for more than 10 percent of accounts receivable | one customer accounted for more than 10 percent of accounts receivable
Customer concentration risk benchmark percentage |  |  |  |  |  | more than 10 percent of the Company's revenues | more than 10 percent of the Company's revenues | more than 10 percent of the Company's revenues | more than 10 percent of accounts receivable | more than 10 percent of accounts receivable

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- Definition Face amount or stated value of common stock per share; generally not indicative of the fair market value per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 4 -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 -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 3: 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 Description of risks that arise due to the volume of business transacted with a particular customer. At a minimum, the description informs financial statement users of the general nature of the risk, but excludes "Information about Major Customers" that may be disclosed elsewhere (for instance, segment disclosures). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 94-6 -Paragraph 22, 24 -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 -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6327-108592 + Details
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