16. Geographic area information (Details) - Geographic Information (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net sales:
United States	$ 46,377	$ 49,932	$ 49,301
International	13,764	18,454	16,668
Total	60,141	68,386	65,969
Fixed assets, net:
United States	1,583	1,941	2,129
International	1,149	1,361	1,229
Total	$ 2,732	$ 3,302	$ 3,358

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- Definition

Amount of long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets, located in the entity's country of domicile.

+ References

No definition available.

+ Details

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- Definition

+ References

No definition available.

+ Details

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- Definition

Revenues from external customers attributed to the entity's country of domicile.

+ References

No definition available.

+ Details

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- Definition

Revenues from external customers attributed to all foreign countries in total from which the entity derives revenues.

+ References

No definition available.

+ Details

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- Definition

Amount of revenue from external customers attributed to an individual foreign country from which revenue is material. An entity also may provide subtotals of geographic information about groups of countries.

+ References

No definition available.

+ Details

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- Definition

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 280

-SubTopic 10

-Section 50

-Paragraph 41

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599

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