Allowances (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Doubtful Accounts Receivable	$ 49,364	$ 32,392	$ 10,513	$ 13,315
Accounts receivable, net	83,616	101,217
China [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase in allowance for doubtful accounts reserves	23,200
Allowance for Doubtful Accounts Receivable	36,444	21,106	$ 1,300	$ 3,029
Accounts receivable, net		17,500
Accounts receivable, gross	41,600	38,600
China [Member] | Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross	$ 38,200	$ 36,900