Employee Stock Purchase Plans (Details)
|
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2011
|
Dec. 31, 2010
|
Dec. 31, 2009
|
|
Employee Stock Purchase Plan [Abstract] | |||
Purchase Price (% of Market Price on Purchase Date) | 95.00% | ||
Maximum Employee Subscription Rate (% of Gross Wages) | 10.00% | ||
Stock Issued During Period, Employee Stock Purchase Plans (in shares) | 139,000 | 127,000 | 139,000 |
X | ||||||||||
- Details
|
X | ||||||||||
- Definition
The discount rate from market value on purchase date that participants pay for shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Number of shares issued during the period as a result of an employee stock purchase plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|