XML 38 R76.htm IDEA: XBRL DOCUMENT v2.4.0.8
Stockholders' Equity - Additional Information (Detail) (USD $)
 0 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 3 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended
Oct. 23, 2013
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Nov. 30, 2004
2004 Award Plan [Member]
Dec. 31, 2012
2004 Award Plan [Member]
Dec. 31, 2012
2004 Award Plan [Member]
Stock Option [Member]
Dec. 31, 2013
2004 Award Plan [Member]
Unvested Restricted Stock [Member]
Dec. 31, 2012
2004 Award Plan [Member]
Unvested Restricted Stock [Member]
Dec. 31, 2011
2004 Award Plan [Member]
Unvested Restricted Stock [Member]
May 31, 2011
2007 Award Plan [Member]
Mar. 31, 2007
2007 Award Plan [Member]
Mar. 31, 2011
2007 Award Plan [Member]
Dec. 31, 2013
2007 Award Plan [Member]
Dec. 31, 2012
2007 Award Plan [Member]
Dec. 31, 2011
2007 Award Plan [Member]
Dec. 31, 2013
2007 Award Plan [Member]
Stock Option [Member]
Dec. 31, 2013
2007 Award Plan [Member]
Unvested Restricted Stock [Member]
Dec. 07, 2010
2010 Inducement Plan [Member]
Dec. 31, 2013
2010 Inducement Plan [Member]
Dec. 31, 2012
2010 Inducement Plan [Member]
Dec. 31, 2011
2010 Inducement Plan [Member]
Dec. 31, 2010
2010 Inducement Plan [Member]
Dec. 31, 2013
2010 Inducement Plan [Member]
Stock Option [Member]
Dec. 31, 2013
2010 Inducement Plan [Member]
Unvested Restricted Stock [Member]
Stockholder Equity [Line Items]                                                  
Outstanding common shares $ 50,000,000                                                
Period of purchase Common Share 2 years                                                
Shares repurchased   75,000           0 0 0       13,314 17,574 3,011       415 0 0      
Common stock aggregate purchase price   (2,193,000)                                              
Option expiration Period         10 years             10 years             10 years            
Vesting Period         4 years             4 years             4 years            
Stock options granted under the plan             2,591,204                   4,599,746             227,490  
Restricted stock awards granted under the plan                 2,810,403                 1,013,280             104,888
Further awards granted           0                                      
Common stock, shares Authorized                     2,000,000   6,383,560                   700,000    
Shares authorized for issuance                     4,383,560                            
Unrecognized compensation expense   15,000,000                                              
Weighted average period, years   1 year 10 months 24 days                                              
Aggregate intrinsic value of options exercised   25,800,000 6,800,000 6,000,000                                          
Vested and expected to vest intrinsic value   $ 6,600,000 $ 3,200,000 $ 2,500,000