Other Accrued Liabilities (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Payables and Accruals [Abstract]
Customer rebates	$ 3,168,756	$ 4,128,082
Remediation liability	80,947	265,876
Pension liability	359,216	219,842
Other	2,052,074	3,346,368
Total accrued liabilities	$ 5,660,993	$ 7,960,168