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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - A/R, Inventories, and Intangibles (Details) - USD ($)
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Accounts Receivable and Allowance for Doubtful Accounts      
Accounts Receivable Allowances $ 529,000   $ 883,000
Inventories      
Raw Materials 15,414,139   14,533,690
Work in Process 4,179,472   4,104,968
Finished Goods 2,896,642   2,688,596
Reserves (815,017)   (673,413)
Total 21,675,236   20,653,841 [1]
Impairment Analysis      
Impairment charges recognized 0    
Finite-Lived Intangible Assets      
Gross Carrying Amount 2,295,373   2,195,373
Accumulated Amortization 384,052   333,609
Net Book Value 1,911,321   1,861,764 [1]
Amortization expense 50,443 $ 47,663  
Estimated future amortization expense      
Remainder of 2017 168,000    
2018 224,000    
2019 224,000    
2020 196,000    
2021 188,000    
Thereafter 911,321    
Total 1,911,321   1,861,764 [1]
Customer Relationships      
Finite-Lived Intangible Assets      
Gross Carrying Amount 1,302,000   1,302,000
Accumulated Amortization 253,165   216,998
Net Book Value 1,048,835   1,085,002
Estimated future amortization expense      
Total 1,048,835   1,085,002
Trade Names      
Finite-Lived Intangible Assets      
Gross Carrying Amount 814,000   814,000
Accumulated Amortization 71,225   61,050
Net Book Value 742,775   752,950
Estimated future amortization expense      
Total 742,775   752,950
Intellectual Property      
Finite-Lived Intangible Assets      
Gross Carrying Amount 100,000    
Accumulated Amortization 2,778    
Net Book Value 97,222    
Estimated future amortization expense      
Total 97,222    
Bond Issue Costs      
Finite-Lived Intangible Assets      
Gross Carrying Amount 79,373   79,373
Accumulated Amortization 56,884   55,561
Net Book Value 22,489   23,812
Estimated future amortization expense      
Total $ 22,489   $ 23,812
[1] The balance sheet at December 31, 2016 has been derived from the audited financial statements at that date