Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details Textual)

v2.4.0.6
Stock-Based Compensation (Details Textual)
3 Months Ended
Mar. 31, 2013
Stock Based Compensation (Textual) [Abstract]  
Remaining shares available for grant 916,871
Shares of common stock authorized under stock compensation plan 8,950,000
Performance based awards [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vesting period for non-vested stock awards and stock options 3 years
Maximum [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vesting period for non-vested stock awards and stock options 5 years
Minimum [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vesting period for non-vested stock awards and stock options 3 years