Investments in debt and equity securities which are categorized neither as held-to-maturity nor trading and which are intended to be sold or mature more than one year from the balance sheet date or operating cycle, if longer. Such securities are reported at fair value; unrealized gains (losses) related to Available-for-sale Securities are excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain (loss) of an Available-for-sale security that is designated as being hedged in a fair value hedge is recognized in earnings during the period of the hedge, as are other than temporary declines in fair value below the cost basis for investments in equity securities and debt securities that an entity intends to sell or it is more likely than not that it will be required to sell before the recovery of its amortized cost basis. Other than temporary declines in fair value below the cost basis for debt securities categorized as Available-for-sale that an entity does not intend to sell and for which it is not more likely than not that the entity will be required to sell before the recovery of its amortized cost basis are bifurcated into credit losses and losses related to all other factors. Other than temporary declines in fair value below cost basis related to credit losses are recognized in earnings, and losses related to all other factors are recognized in other comprehensive income.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Available-for-Sale Securities
-URI http://asc.fasb.org/extlink&oid=6505594

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26626-111562

Name:	us-gaap_AvailableForSaleSecuritiesNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Note 9 - Long-term Investments - Long-term Investments (Details)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2015 EUR (€)	Jul. 31, 2013 USD ($)	Jul. 31, 2013 TWD
Sigurd Cayman [Member]
Cost method
Cost Method Investments	$ 2,365,000	$ 2,365,000
X-FAB [Member]
Cost method
Cost Method Investments		4,968,000	€ 4,982,000
PVEF [Member]
Cost method
Cost Method Investments	44,000	49,000
GEM [Member]
Cost method
Cost Method Investments		78,000
EMC [Member]
Cost method
Cost Method Investments	1,844,000	1,844,000
Verticil [Member]
Cost method
Cost Method Investments				$ 250,000	TWD 7,500,000
Total Cost Method Investments [Member]
Cost method
Cost Method Investments	4,253,000	9,304,000
Etrend [Member]
Cost method
Available For Sale - Noncurrent
Total Long Term Investments [Member]
Cost method
Available For Sale - Noncurrent	$ 4,253,000	$ 9,304,000