Other Accrued Liabilities (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Payables and Accruals [Abstract]
Customer rebates	$ 3,277,416	$ 3,404,720
Remediation liability	39,044	123,587
Pension liability	183,034	900,291
Other	1,873,695	1,732,940
Total accrued liabilities	$ 5,373,188	$ 6,161,538