|
Significant Accounting Policies (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2015
|
Mar. 31, 2014
|
|
| Accounting Policies [Abstract] | ||
| Beginning Balance | $ 194,951 | $ 148,534 |
| Redemptions | (1,729) | (4,820) |
| Granted | 5,704 | 13,327 |
| Changes in redemption value | 4,290 | 38,850 |
| Currency Translation Adjustments | (878) | (940) |
| Ending Balance | $ 202,338 | $ 194,951 |