|
Net Income Per Comon Share Data (Details 1) (Stock options [Member])
|
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2012
|
Jun. 30, 2011
|
Jun. 30, 2012
|
Jun. 30, 2011
|
|
|
Stock options [Member]
|
||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Antidilutive equity awards | 86,500 | 267 | 86,500 | 58,767 |