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Accrued Liabilities (Narrative) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Accrued Liabilities [Abstract]
Accrued product liability	$ 5,490,000	$ 6,060,000
Accrued payroll liability	7,045,000	6,135,000
Environmental accrued liability	1,390,000	1,650,000
Other accrued liabilities	$ 1,755,000us-gaap_OtherAccruedLiabilitiesCurrent	$ 2,062,000us-gaap_OtherAccruedLiabilitiesCurrent

Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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