Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Summary of nonvested restricted stock award activity) (Details)

v3.4.0.3
Stockholders' Equity (Summary of nonvested restricted stock award activity) (Details) - Restricted Stock [Member] - Stock Option Plan Member [Member] - $ / shares
shares in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Shares (in thousands)    
Nonvested beginning balance (shares) 1,495  
Granted (shares) 495  
Vested (shares) (80)  
Nonvested ending balance (shares) 1,910  
Weighted Average Grant Date Fair Value    
Nonvested, Beginning (USD per share) $ 11.08  
Granted (USD per share) 18.16 $ 14.56
Vested (USD per share) 10.98  
Nonvested, Ending (USD per share) $ 12.92