Annual report pursuant to section 13 and 15(d)

Stock Compensation Plans - Additional Information (Details)

v2.4.0.8
Stock Compensation Plans - Additional Information (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 0 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2013
Qualified Employee Stock Purchase Plan [Member]
Dec. 31, 2012
Qualified Employee Stock Purchase Plan [Member]
Dec. 31, 2011
Qualified Employee Stock Purchase Plan [Member]
Dec. 31, 2013
Plan Limit [Member]
Dec. 31, 2013
Individual Counterparty [Member]
Dec. 31, 2013
Plan 2009 [Member]
Dec. 31, 2012
Plan 2009 [Member]
Dec. 31, 2011
Plan 2009 [Member]
Dec. 31, 2010
Plan 2009 [Member]
Dec. 31, 2012
Plan 2009 [Member]
Restricted Stock [Member]
Dec. 31, 2011
Plan 2009 [Member]
Restricted Stock [Member]
Sep. 30, 2010
Plan 2009 [Member]
Restricted Stock [Member]
Dec. 31, 2013
Plan 1999 [Member]
Dec. 31, 2012
Plan 1999 [Member]
Dec. 31, 2011
Plan 1999 [Member]
Dec. 31, 2010
Plan 1999 [Member]
Dec. 31, 2013
Employees and Director Option [Member]
Dec. 31, 2012
Employees and Director Option [Member]
Dec. 31, 2011
Employees and Director Option [Member]
Nov. 04, 2011
Securities America Acquisition [Member]
Number of shares available for grant         10,000,000         6,351,480           200,000 1,189,654             8,020,743
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date 5.00%                                              
Stock Issued During Period, Shares, Share-based Compensation, Gross         112,646 98,513 58,884                                  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit         $ 1.57 $ 1.25 $ 1.09                                  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit         $ 2.97 $ 1.69 $ 2.36                                  
Issuance of common stock $ 1,256 $ 795 $ 682   $ 201 $ 138 $ 83                                  
Awards With Annual Limit               25,000,000 1,500,000                              
Share-based Compensation Arrangement by Share-based Payment Award, Combined Voting Power                   10.00%                            
Share-based Compensation Arrangement by Share-based Payment Award, Fair Market Value                   100.00%                            
Share-based Compensation Arrangement by Share-based Payment Award, Fair Market Value for Ten Percent Shareholder                   110.00%                            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value                                         $ 0.74 $ 1.13 $ 0.82 $ 1.19
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period                                               10 years
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Exercise Price                                               $ 1.68
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value                                               9,531
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value                                         $ 0.74 $ 1.13 $ 0.82 $ 1.19
Exercisable options, weighted average exercise price                                               $ 1.68
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value                                               9,531
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options 12,498                                              
Unrecognized compensation cost for stock based compensation, period of recognition 1 year 10 months 2 days                                              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value 957 1,267 762                                          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period                           12,500 5,000                  
Allocated Share-based Compensation Expense $ 6,766 $ 4,690 $ 3,909                     $ 54 $ 105                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 4,425,000 4,475,000 4,475,000 4,475,000           18,145,564 15,937,715 12,503,994 1,245,000       16,932,401 17,302,468 17,765,468 17,195,240