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Stock-Based Compensation and Benefit Plans (Narrative) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 1 Months Ended 3 Months Ended 1 Months Ended 3 Months Ended 3 Months Ended 68 Months Ended 3 Months Ended 1 Months Ended 3 Months Ended
Nov. 30, 2012
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2013
Registered Direct Offering [Member]
Mar. 31, 2014
Registered Direct Offering [Member]
Mar. 31, 2014
Equity Incentive Plan [Member]
Mar. 31, 2014
Non Employee Director Stock Option Plan [Member]
Mar. 31, 2014
2007 Associate Stock Purchase Plan [Member]
Jun. 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]
Mar. 31, 2014
Board Of Directors [Member]
Jan. 31, 2014
Executive Officer [Member]
employee
Feb. 28, 2013
Key Employees [Member]
Jan. 31, 2014
Non Employee Board Members [Member]
Feb. 28, 2013
Non Employee Board Members [Member]
Mar. 31, 2014
Minimum [Member]
Mar. 31, 2014
Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                                      
Number of shares reserved for awards           1,720,000 700,000                        
Unrecognized compensation expense related to unvested share-based awards   $ 371                                  
Unrecognized compensation costs, period for recognition   2 years                                  
Weighted average estimated fair value of stock options granted   $ 0.79 $ 1.24                                
Pre-vesting forfeiture rate based on upon actual historical experience for all employee option awards                         0.00%         18.30% 24.20%
Stock options granted                           320,000 173,000 60,000 20,000    
Number of individuals receiving grants                           2          
Shares cancelled or expired   76,000                                  
Shares reserved                   120,000 80,000 60,000              
Fair market value on first or last day of the offering period               85.00%                      
Percentage of compensation allowed for designation to share purchases               10.00%                      
Shares purchased by associates                 96,000                    
Common stock sold in Registered Direct Offering       868,000                              
Price per share in direct offering       $ 1.80                              
Term of warrant         5 years                            
Period after issuance before exercisability         6 months 1 day                            
Shares to be issued per warrant       0.50                              
Warrant exercise price       $ 2.73                              
Proceeds resulting from registered direct offering   $ 1,374                                  
Common stock split ratio 0.20                                    
Maximum plan contribution of pretax compensation   15.00%