2013 | 2012 | 2011 | ||||||||||
Interest and other income (expense), net: | ||||||||||||
Interest income | $ | 21,887 | $ | 24,549 | $ | 24,506 | ||||||
Foreign exchange gains (losses) | (21,001 | ) | (31,431 | ) | (30,226 | ) | ||||||
Realized gains on fixed income investment | 4,090 | 3,152 | 2,012 | |||||||||
Realized losses on fixed income investment | (1,077 | ) | (278 | ) | (178 | ) | ||||||
Other | 1,042 | 594 | 912 | |||||||||
Interest and other income (expense), net | $ | 4,941 | $ | (3,414 | ) | $ | (2,974 | ) | ||||
Interest expense | $ | (67,508 | ) | $ | (67,487 | ) | $ | (66,952 | ) | |||
Investment gains (losses), net: | ||||||||||||
Realized investment gains | $ | 1,783 | $ | 8,918 | $ | 7,159 | ||||||
Unrealized investment gains | 1,251 | 940 | — | |||||||||
Realized investment losses | (7,049 | ) | (104 | ) | (850 | ) | ||||||
Unrealized investment losses | — | (250 | ) | (452 | ) | |||||||
Investment gains (losses), net | $ | (4,015 | ) | $ | 9,504 | $ | 5,857 | |||||
Non-operating income (expense), net | $ | (66,582 | ) | $ | (61,397 | ) | $ | (64,069 | ) | |||