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Bank Financing Arrangements (Details Narrative) - USD ($) |  | 12 Months Ended
--- | --- | ---
Feb. 26, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Interest expense |  | $ 100,455 | $ 207,299
Domestic Line of Credit |  |  |
Line of credit initiation date |  | Feb. 27, 2014 | Feb. 27, 2014
Line of credit extension date |  | Mar. 23, 2015 |
Aggregate maximum advance amount | $ 2,000,000 | $ 1,500,000 | $ 1,500,000
Borrowing capacity description | 70% of qualified receivables | 70% of qualified receivables | 70% of qualified receivables
Debt reference rate | Bank's Prime Rate | Bank's Prime Rate | Bank's Prime Rate
Minimum interest rate on debt (as a percent) | 3.25% | 3.25% | 3.25%
Basis point added to reference rate of debt | 1.50% | 1.50% | 1.50%
Monthly collateral handling fee | 0.10% | 0.20% | 0.20%
Effective rate on cash advances |  | 7.15% | 7.15%
Amount outstanding |  | $ 0 | $ 815,981
Interest expense |  | 38,494 | 69,874
Accrued interest |  | $ 0 | $ 3,981
Line of credit expiration date | Feb. 27, 2018 | Feb. 27, 2017 | Feb. 27, 2016
Foreign Line of Credit |  |  |
Line of credit initiation date |  | Feb. 27, 2014 | Feb. 27, 2014
Aggregate maximum advance amount | $ 500,000 | $ 1,000,000 | $ 1,000,000
Borrowing capacity description | 70% of qualified receivables | 70% of qualified receivables | 70% of qualified receivables
Debt reference rate | Bank's Prime Rate | Bank's Prime Rate | Bank's Prime Rate
Minimum interest rate on debt (as a percent) | 3.25% | 3.25% | 3.25%
Basis point added to reference rate of debt | 1.50% | 1.50% | 1.50%
Monthly collateral handling fee | 0.10% | 0.20% | 0.20%
Effective rate on cash advances |  | 7.15% | 7.15%
Amount outstanding |  | $ 0 | $ 0
Accrued interest |  | $ 0 | $ 0
Line of credit expiration date | Feb. 27, 2018 | Feb. 27, 2016 | Feb. 27, 2016

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