Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 4,350	$ 4,090
Accumulated Amortization	(3,170)	(2,893)
Net Amount	1,180	1,197
Product Formulations [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	138	138
Accumulated Amortization	(104)	(95)
Net Amount	$ 34	43
Amortization Period	15 years
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 750	750
Accumulated Amortization	(419)	(369)
Net Amount	$ 331	381
Amortization Period	15 years
Approvals and Certifications [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 3,462	3,202
Accumulated Amortization	(2,647)	(2,429)
Net Amount	$ 815	$ 773
Amortization Period	5 years