Income Taxes (Reconciliation of effective tax rate) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation between statutory rate and income tax provision
U.S. federal tax at 35%	$ 43,396	$ 18,939	$ 32,559
State taxes, net of federal benefit	1,124	1,126	1,451
Foreign income taxed at different rates	(17,814)	(14,717)	(22,507)
Foreign exchange gain (loss)	844	12,329	(5,966)
Change in valuation allowance	(32,415)	(3,112)	(8,672)
Adjustments related to prior years	2,727	(2,464)	3,582
Income tax credits generated	(2,622)	(1,370)	(466)
Repatriation of foreign earnings and profits	6,499	3,240	3,388
Expiration of capital loss carryforward	15,555	0	0
Equity in earnings of J-Devices	0	2,404	3,047
Acquisition expenses	1,381	0	0
Debt conversion costs	4,067	0	0
Other	(96)	626	708
Income tax expense	$ 22,646	$ 17,001	$ 7,124
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	35.00%