Other Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2016

Payables and Accruals [Abstract]

Accrued Liabilities

	December 31,
	2016		2015
Customer rebates	$	2,789,003	$	3,168,756
Remediation liability		57,197		80,947
Pension liability		205,071		359,216
Other		2,619,819		2,052,074
	$	5,671,090	$	5,660,993