XML 56 R29.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Share Capital (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2013
Equity [Abstract] |
Changes in Number of Shares of Class A Stock Outstanding | The following table reflects changes in the number of shares of Class A Stock outstanding for the periods indicated:
|  | Three months ended September 30, |  |  | Nine months ended September 30, |
|  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |
Class A Stock outstanding, beginning of period |  |  | 13,496,783 |  |  |  | 13,489,162 |  |  |  | 13,508,318 |  |  |  | 13,572,265 |
Issued pursuant to shared-based compensation plans |  |  | 65,227 |  |  |  | 40,850 |  |  |  | 65,227 |  |  |  | 57,647 |
Repurchased and cancelled pursuant to the stock buy-back |  |  | (119,251 | ) |  |  | (15,000 | ) |  |  | (130,786 | ) |  |  | (114,900 | )
Class A Stock outstanding, end of period |  |  | 13,442,759 |  |  |  | 13,515,012 |  |  |  | 13,442,759 |  |  |  | 13,515,012 |

X
- Details
Name: | us-gaap_EquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the change in common stock outstanding. + References No definition available. + Details
Name: | us-gaap_ScheduleOfCommonStockOutstandingRollForwardTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration