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Debt and Leases - Debt (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016
Debt: |  |
Long-term Debt | $ 6,750,000 | $ 9,750,000
Current portion of long-term debt | (3,000,000) | (3,000,000)
Long-term debt | 3,750,000 | 6,750,000
Letter of Credit, Maximum | 250,000 |
Letters of Credit Outstanding, Amount | $ 175,000 |
Loans payable | Capex loan |  |
Debt: |  |
Repayment term | 7 years |
Debt instrument, face amount | $ 12,000,000 |
Debt Instrument, Description of Variable Rate Basis | 30 day LIBOR |
Basis spread on variable rate | 1.60% |
Loans payable | Term Loan [Member] |  |
Debt: |  |
Long-term Debt | $ 6,750,000 | $ 9,750,000
Debt Instrument, Interest Rate, Stated Percentage | 3.36% | 2.55%
Repayment term | 5 years |
Debt instrument, face amount | $ 15,500,000 |
Debt Instrument, Description of Variable Rate Basis | 30 day LIBOR |
Basis spread on variable rate | 1.80% |
Line of credit |  |
Debt: |  |
Percent of subsidiary stock not security for financing | 65.00% |
Debt Instrument, Description of Variable Rate Basis | daily LIBOR |
Line of credit | Revolving line of credit |  |
Debt: |  |
Long-term Debt | $ 0 | $ 0
Line of Credit Facility, Maximum Borrowing Capacity | $ 18,000,000 |
Basis spread on variable rate | 1.60% |

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- Definition Long-term Debt, Maturities, Repayment Term + References No definition available. + Details
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- Definition Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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