Income Taxes (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income Taxes [Line Items]
Income tax incentives	$ 1,734,000	$ 3,234,000
Net impact of holiday tax incentives, per diluted share	$ 0.03	$ 0.06
Unrecognized tax benefits including interest and penalties	18,000,000
Interest on unrecognized tax	1,700,000
Penalty on unrecognized tax	1,600,000
CHINA
Income Taxes [Line Items]
Income tax incentives	353,000	1,507,000
Income tax reconciliation tax holidays expiration date	2015
MALAYSIA
Income Taxes [Line Items]
Income tax incentives	419,000	474,000
Income tax reconciliation tax holidays expiration date	2016
THAILAND
Income Taxes [Line Items]
Income tax incentives	$ 962,000	$ 1,253,000
Income tax reconciliation tax holidays expiration date	2026