|
Operating Revenue by Geographic Location (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
| Operating revenue by geographic location | |||
| Revenue | $ 552,091 | $ 588,117 | $ 589,009 |
| Australia-Asia | |||
| Operating revenue by geographic location | |||
| Revenue | 389,098 | 413,662 | 403,697 |
| Europe | |||
| Operating revenue by geographic location | |||
| Revenue | $ 162,993 | $ 174,455 | $ 185,312 |