Taxation (Details - Income Tax Uncertainties) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Contingency [Line Items]
Balance, beginning of year	$ 12,290	$ 51,529	$ 42,479
Changes in tax positions taken during a prior period	2,075	3,629	13,319
Tax positions taken during the current period	3,088	3,788	2,578
Change as a result of a lapse in the statute of limitations	(1,201)	(47,886)	(3,725)
Impact of the change in foreign currency exchange rates	332	1,230	(3,122)
Balance, end of year	16,584	12,290	51,529
[UnrecognizedTaxBenefitBeforeInterestAndPenaltiesMember]
Income Tax Contingency [Line Items]
Balance, beginning of year	11,879	51,529	41,935
Changes in tax positions taken during a prior period	1,571	3,194	13,215
Tax positions taken during the current period	3,080	3,788	2,578
Change as a result of a lapse in the statute of limitations	(1,057)	(47,886)	(3,254)
Impact of the change in foreign currency exchange rates	311	1,254	(2,945)
Balance, end of year	15,784	11,879	51,529
[InterestAndPenaltiesOnUnrecognizedTaxBenefitMember]
Income Tax Contingency [Line Items]
Balance, beginning of year	411	0	544
Changes in tax positions taken during a prior period	504	435	104
Tax positions taken during the current period	8	0	0
Change as a result of a lapse in the statute of limitations	(144)	0	(471)
Impact of the change in foreign currency exchange rates	21	(24)	(177)
Balance, end of year	$ 800	$ 411	$ 0