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Long-Term Debt (Details) (USD $) In Thousands, unless otherwise specified | 9 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2012 | Dec. 31, 2011 | Aug. 09, 2011
Long term debt |  |  |
Less current installments | $ (3,334) | $ (3,296) |
Long-term debt | 3,392 | 5,894 |
Revolving Credit agreement |  |  |
Long term debt |  |  |
Maximum borrowing capacity |  |  | 15,000
Variable rate basis | LIBOR |  |
Margin on variable rate (as a percent) | 1.25% |  |
Annual commitment fee (as a percent) | 0.25% |  |
Remaining borrowing capacity | 15,000 | 15,000 |
Term loan |  |  |
Long term debt |  |  |
Face amount |  |  | 10,000
Variable rate basis | LIBOR |  |
Margin on variable rate (as a percent) | 1.25% |  |
Interest rate at period end (as a percent) | 1.50% |  |
Monthly installments, including interest | 285 | 285 |
Long-term debt | $ 6,726 | $ 9,190 |

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- Definition The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 21 -Paragraph 16, 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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