Annual report pursuant to Section 13 and 15(d)

Accrued Expenses (Details)

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Accrued Expenses (Details) - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Accrued Expenses    
Salaries, wages, and commissions $ 5,208,495 $ 3,219,190
Taxes, other than income taxes 852,116 921,476
Current portion of earn-out liability 2,906,822 1,663,751
Advances from customers 177,518 184,874
Insurance 321,000 372,000
Professional fees 256,296 343,706
Warranty reserve 38,020 37,771
Benefit plans 265,605 208,717
Insurance financing liability 347,440 224,961
Current portion, capital lease obligation 267,028 76,198
Customer rebate liability 701,361 439,912
Current portion, environmental reserves 0 549,000
Current portion, deferred gain sale-leaseback 334,273 334,273
Other accrued items 487,712 417,625
Total accrued expenses $ 12,163,686 $ 8,993,454