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Stock-Based Compensation and Benefit Plans (Details Textual) (USD $) In Thousands, except Per Share data, unless otherwise specified | 1 Months Ended | 3 Months Ended |  | 3 Months Ended |  |  | 1 Months Ended |  | 3 Months Ended |  | 1 Months Ended | 3 Months Ended | 1 Months Ended |
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Mar. 31, 2013 | Feb. 28, 2013 | Nov. 30, 2012 | Feb. 29, 2012 | Dec. 31, 2007 | Mar. 31, 2013 | Mar. 31, 2012 | Nov. 30, 2007 | Mar. 31, 2012 Warrant | Mar. 31, 2013 2007 Associate Stock Purchase Plan | Jun. 30, 2011 2007 Associate Stock Purchase Plan | Jun. 30, 2010 2007 Associate Stock Purchase Plan | Feb. 29, 2012 Key Employee | Jun. 30, 2012 Restricted Stock | Mar. 31, 2013 Unregistered Shares | Mar. 31, 2012 Unregistered Shares | Mar. 31, 2013 Minimum | Mar. 31, 2013 Maximum | Mar. 31, 2013 Director | Feb. 28, 2013 Executive Officer | Feb. 29, 2012 Executive Officer | Feb. 28, 2013 Non Employee Board Members | Apr. 30, 2012 Non Employee Board Members | Feb. 29, 2012 Non Employee Board Members | Mar. 31, 2013 Non Employee Board Members | Mar. 31, 2012 Non Employee Board Members | Apr. 30, 2013 Non Employee Board Members Subsequent Event | Mar. 31, 2013 Equity Incentive Plan | Mar. 31, 2013 Non Employee Director Stock Option Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares originally reserved for awards |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 720 | 200
Unrecognized compensation expense related to unvested share-based awards | $ 575 |  |  |  |  | $ 575 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average estimated fair value of stock options granted |  |  |  |  |  | $ 1.24 | $ 3.55 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prevesting forfeiture rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 18.30% | 25.20% | 0.00% |  |  |  |  |  |  |  |  |  |
Received Stock Options to Purchase |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 173 | 61 | 20 |  | 7 |  |  |  |  |
Restricted stock awards to a key employee |  |  |  |  |  |  |  |  |  |  |  |  | 6 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average fair value of the shares |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 5.35 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair market value of grants totaled |  |  |  |  |  |  |  |  |  |  |  |  |  | 32 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock to a vendor in exchange for executive search services |  | 6 |  | 21 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Compensation expense on fair value |  |  |  |  |  | 159 | 161 |  | 71 |  |  |  |  |  | 10 | 114 |  |  |  |  |  |  |  |  | 13 | 14 |  |  |
Warrant purchase | 30 |  |  |  |  | 30 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock Exercise Price | $ 8.75 |  |  |  |  | $ 8.75 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of warrants | $ 2.35 |  |  |  |  | $ 2.35 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Risk-free interest rate |  |  |  | 0.51% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Volatility rate |  |  |  | 87.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant exercisable issuance | 100.00% |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected term |  |  |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate shares of common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 |  |  |  | 8 |  |
Weighted average fair value of the shares was based on the closing market price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1.50 | $ 4.45 |  |  |
Common Stock, Capital Shares Reserved for Future Issuance |  |  |  |  |  |  |  | 60 |  |  | 120 | 80 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options and warrants were cancelled or expired | 1 |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair market value on first or last day of the offering period |  |  |  |  |  |  |  |  |  | 85.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares purchased by associates |  |  |  |  |  | 85 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining shares available to be issued | 35 |  |  |  |  | 35 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Compensation for purchase of shares |  |  |  |  |  | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock sold in Registered Direct Offering | 868 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Price per share in direct offering | $ 1.80 |  |  |  |  | $ 1.80 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, one five year purchase of warrants |  |  |  |  |  | Each unit consisting of one share of common stock and one five-year warrant to purchase 0.50 of a share of common stock, with exercisability commencing six months and one day after issuance at an exercise price 2.73 per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from the issuance of common stock |  |  |  |  |  | $ 1,377 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Associates may contribute up to 15% of their pretax compensation to the plan |  |  |  |  | Associates may contribute up to 15% of their pretax compensation to the plan. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pretax compensation to plan |  |  |  |  | 15.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commen stock split ratio |  |  | 0.2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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