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Stock-Based Compensation and Benefit Plans (Narrative) (Details) (USD $)
1 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 1 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 1 Months Ended 1 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 9 Months Ended 71 Months Ended
Feb. 28, 2013
Nov. 30, 2012
Feb. 29, 2012
Sep. 30, 2013
Mar. 31, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Mar. 31, 2012
Warrant [Member]
Sep. 30, 2013
Warrant [Member]
Sep. 30, 2012
Warrant [Member]
Feb. 28, 2013
Unregistered Shares [Member]
Feb. 29, 2012
Unregistered Shares [Member]
Sep. 30, 2013
Unregistered Shares [Member]
Sep. 30, 2012
Unregistered Shares [Member]
Sep. 30, 2013
Unregistered Shares [Member]
Sep. 30, 2012
Unregistered Shares [Member]
Mar. 31, 2013
Registered Offering [Member]
Sep. 30, 2013
Minimum [Member]
Sep. 30, 2013
Maximum [Member]
Feb. 28, 2013
Executive Officer [Member]
employee
Feb. 29, 2012
Executive Officer [Member]
employee
Jun. 30, 2012
Key Employee [Member]
employee
Feb. 29, 2012
Key Employee [Member]
Sep. 30, 2012
Key Employee [Member]
Feb. 28, 2013
Non-Employee Board Member [Member]
Feb. 29, 2012
Non-Employee Board Member [Member]
Sep. 30, 2013
Non-Employee Board Member [Member]
Sep. 30, 2012
Non-Employee Board Member [Member]
Sep. 30, 2013
Non-Employee Board Member [Member]
Sep. 30, 2012
Non-Employee Board Member [Member]
Sep. 30, 2013
Equity Incentive Plan [Member]
Sep. 30, 2012
Equity Incentive Plan [Member]
Sep. 30, 2013
Equity Incentive Plan [Member]
Sep. 30, 2012
Equity Incentive Plan [Member]
Sep. 30, 2013
Non Employee Director Stock Option Plan [Member]
Sep. 30, 2013
2007 Associate Stock Purchase Plan [Member]
Sep. 30, 2013
2007 Associate Stock Purchase Plan [Member]
Jun. 30, 2011
2007 Associate Stock Purchase Plan [Member]
Jun. 30, 2010
2007 Associate Stock Purchase Plan [Member]
Nov. 30, 2007
2007 Associate Stock Purchase Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                                                                                  
Number of shares reserved for awards                                                               1,720,000   1,720,000   700,000          
Unrecognized compensation expense related to unvested share-based awards       $ 460,000     $ 460,000                                                                    
Unrecognized compensation costs, period for recognition             2 years                                                                    
Weighted average estimated fair value of stock options granted             $ 1.24 $ 3.55                                                                  
Expected future dividends             0                                                                    
Prevesting forfeiture rate                                     18.30% 25.20%                               0.00%          
Stock options granted 173,000   61,000                                       6,000     20,000 7,000 13,000 3,000 35,000 11,000                    
Number of individuals receiving stock grants                                         2 2 2                                    
Restricted stock awards to a key employee                                               6,000                                  
Weighted average fair value of the shares                                               $ 5.35                                  
Fair market value of grants                                                 32,000                                
Common stock to a vendor in exchange for executive search services                       6,000 21,000                                                        
Compensation expense on fair value       94,000   99,000 341,000 377,000     71,000     10,000 114,000 10,000 114,000                             11,000 12,000 46,000 69,000            
Warrant issued                 30,000                                                                
Warrant exercise price                 $ 8.75                 $ 2.73                                              
Fair value of warrants                 $ 2.35                                                                
Expected term                 3 years                                                                
Risk-free interest rate                 0.51%                                                                
Volatility rate                 87.40%                                                                
Percentage of warrant that is exercisable upon issuance                     100.00%                                                            
Closing market price on date of grant       $ 0.83   $ 0.00 $ 0.99 $ 4.08                                                                  
Stock options and warrants were cancelled or expired             52,000                                                                    
Shares reserved                                                                             120,000 80,000 60,000
Fair market value on first or last day of the offering period                                                                         85.00%        
Shares purchased by associates                                                                           96,000      
Percentage of compensation allowed for designation to share purchases                                                                         10.00%        
Common stock sold in Registered Direct Offering                                   868,000                                              
Price per share in direct offering                                   $ 1.80                                              
Shares issuable per unit         1                                                                        
Term of warrant                   3 years               5 years                                              
Shares to be issued per warrant                                   0.50                                              
Period after issuance before exercisability                                   6 months 1 day                                              
Proceeds from the issuance of common stock             $ 1,374,000 $ 1,198,000                   $ 1,374,000                                              
Commen stock split ratio   0.2                                                                              
Maximum plan contribution of pretax compensation             15.00%