|
Earnings Per Share (Details)
|
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2013
|
Jun. 30, 2012
|
Jun. 30, 2013
|
Jun. 30, 2012
|
|
|
Common shares from potential exercise of certain stock options [Member]
|
||||
| Earning Per Share (Textual) [Abstract] | ||||
| Antidilutive securities excluded from computation of earnings per share | 643,000 | 37,000 | 506,000 | 106,000 |
|
Common shares from exercise of in-the-money options [Member]
|
||||
| Earning Per Share (Textual) [Abstract] | ||||
| Antidilutive securities excluded from computation of earnings per share | 0 | 606,000 | 137,000 | 537,000 |