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Nature of Business and Summary of Significant Accounting Policies - A/R, Inventories, Property and Equipment (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015
Accounts Receivable and Allowance for Doubtful Accounts |  |
Accounts Receivable Allowance | $ 883,000 | $ 320,000
Inventories |  |
Raw Materials | 14,533,690 | 13,782,411
Work in Process | 4,104,968 | 4,674,223
Finished Goods | 2,688,596 | 2,478,423
Reserves | (673,413) | (749,612)
Total | 20,653,841 | 20,185,445
Property and Equipment |  |
Accumulated Depreciation | (24,524,750) | (22,712,738)
Total Property and Equipment, net | 10,330,834 | 10,507,748
Land |  |
Property and Equipment |  |
Property and equipment | 375,000 | 375,000
Building and Leasehold Improvements |  |
Property and Equipment |  |
Property and equipment | $ 9,393,092 | 9,273,866
Buildings |  |
Property and Equipment |  |
Estimated useful lives | 39 years |
Leasehold improvements | Minimum |  |
Property and Equipment |  |
Estimated useful lives | 3 years |
Leasehold improvements | Maximum |  |
Property and Equipment |  |
Estimated useful lives | 15 years |
Manufacturing equipment |  |
Property and Equipment |  |
Property and equipment | $ 19,632,033 | 18,588,934
Manufacturing equipment | Minimum |  |
Property and Equipment |  |
Estimated useful lives | 3 years |
Manufacturing equipment | Maximum |  |
Property and Equipment |  |
Estimated useful lives | 7 years |
Office and other equipment |  |
Property and Equipment |  |
Property and equipment | $ 5,455,459 | $ 4,982,686
Office and other equipment | Minimum |  |
Property and Equipment |  |
Estimated useful lives | 3 years |
Office and other equipment | Maximum |  |
Property and Equipment |  |
Estimated useful lives | 7 years |

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