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8. Accrued business consolidation and restructuring expenses (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restructuring and Related Cost [Abstract]
Restructuring Charges	$ 138,000	$ 138,000	$ 184,000

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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