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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 |  |  |
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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% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The estimated amount of dividends to be paid to holders of the underlying shares (expected dividends) over the option's term. Dividends are taken into account because payment of dividends to shareholders reduces the fair value of the underlying shares, and option holders generally do not receive dividends. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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