v2.4.1.9

13. Segment and Geographic Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Revenues	$ 30,234us-gaap_SalesRevenueNet	$ 24,859us-gaap_SalesRevenueNet
Long-lived assets	74,260us-gaap_NoncurrentAssets		69,571us-gaap_NoncurrentAssets
UNITED STATES
Revenues	7,294us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_US	5,137us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_US
Long-lived assets	19,074us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_US		15,875us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_US
TAIWAN, PROVINCE OF CHINA
Revenues	18,341us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_TW	14,340us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_TW
Long-lived assets	37,411us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_TW		35,688us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_TW
CHINA
Revenues	4,599us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_CN	5,382us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_CN
Long-lived assets	$ 17,775us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_CN		$ 18,008us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_CN

X

- 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

+ Details

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

X

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

+ Details

Name:	us-gaap_SalesRevenueNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_StatementGeographicalAxis=country_CN
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementGeographicalAxis=country_TW
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementGeographicalAxis=country_US
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: