XML 36 R17.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Earnings Per Share (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2013
Earnings Per Share [Abstract] |
Summary of average number of shares used in the computation of basic and diluted earnings per share |
|  | Three Months Ended |
(shares in thousands) |  | March 31, |
|  | 2013 |  |  | 2012 |
Basic earnings per share |  |  | 4,863 |  |  |  | 4,862 |
Diluted earnings per share |  |  | 4,870 |  |  |  | 4,862 |

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

X
- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
Name: | us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration