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Amount of discretionary contributions made by an employer to a defined contribution plan.

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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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Liability for amount due employees, in addition to wages and any other money that employers owe employees, when their employment ends through a layoff or other termination. For example, a company may provide involuntarily terminated employees with a lump sum payment equal to one week's salary for every year of employment.

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Note 11 - Employee Benefits (Details Textual)	3 Months Ended	12 Months Ended
Note 11 - Employee Benefits (Details Textual)	Apr. 29, 2017 USD ($)	Mar. 31, 2018 CNY (¥)	Dec. 31, 2017 USD ($)	Mar. 31, 2017 CNY (¥)	Feb. 03, 2018 USD ($)
Fiscal 2018 Plan [Member] \| General and Administrative Expense [Member]
Restructuring Charges, Total	$ 400,000
Fiscal 2018 Plan [Member] \| General and Administrative Expense [Member] \| One-time Termination Benefits [Member]
Restructuring Charges, Total	200,000
Severance Plan [Member]
Supplemental Unemployment Benefits, Severance Benefits					$ 0
CHINA \| Endowment Insurance Pension Plan [Member]
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount \| ¥		¥ 19,512		¥ 17,817
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 600,000
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	8.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	20.00%
Denmark, Taiwan, The Netherlands and Germany [Member] \| Retirement Pension Plan [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 200,000
Pension Plan [Member] \| UNITED STATES
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount			$ 18,000
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Additional Amount for Employees Over Age 50			$ 6,000
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 200,000