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Stockholders' Equity - Additional Information (Detail) (USD $) | 1 Months Ended | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |  | 1 Months Ended |  | 12 Months Ended |  | 1 Months Ended |  | 12 Months Ended
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Sep. 30, 2012 | Dec. 31, 2010 | Sep. 30, 2012 | Sep. 30, 2011 | Dec. 31, 2010 Shares Outstanding Before Reverse Stock Split | Dec. 31, 2010 Shares Outstanding After Reverse Stock Split | Sep. 30, 2012 Series C Preferred Stock | Sep. 30, 2012 Series C Preferred Stock Minimum | Sep. 30, 2012 Omnibus Incentive 2008 Plan | Sep. 30, 2012 Non-Statutory Stock Options | Sep. 30, 2011 Non-Statutory Stock Options | Sep. 30, 2012 Non-Statutory Stock Options Minimum | Sep. 30, 2012 Non-Statutory Stock Options Maximum | Sep. 30, 2011 Incentive Stock Options | Sep. 30, 2012 Noncontrolling Interest | Sep. 30, 2012 Warrant | Sep. 30, 2012 Warrant Minimum | Sep. 30, 2012 Warrant Maximum | Sep. 30, 2012 Wells Fargo Bank, NA | Oct. 31, 2010 SII Investment Transaction | Sep. 30, 2012 SII Investment Transaction Scenario One Person | Sep. 30, 2012 SII Investment Transaction Scenario One Minimum | Sep. 30, 2012 SII Investment Transaction Scenario Two | Sep. 30, 2012 SII Investment Transaction Scenario Two Minimum | Oct. 31, 2010 SII Investment Transaction Stock Purchase Agreement | Sep. 28, 2012 SII Investment Transaction Series C Preferred Stock | Jun. 30, 2012 SII Investment Transaction Series C Preferred Stock | Sep. 30, 2012 PFGI II, LLC | Sep. 30, 2012 PFGI II, LLC Amendments
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock authorized | 5,000,000 |  | 5,000,000 | 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible preferred stock reserved for future issuance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 473,934 |  |
Convertible preferred stock, price per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4.22 |  |
Aggregate purchase price of shares | $ 1,000 |  | $ 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,000,000 |  |
Issue of convertible preferred stock | 355,451 |  | 355,451 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 355,451 |  |  |
Issuance of preferred stock value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,500,000 |  |  |
Preference stock dividend rate |  |  |  |  |  |  | 8.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preference stock issue price |  |  |  |  |  |  | $ 4.22 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in preference stock dividend rate |  |  |  |  |  |  | 15.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion ratio |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion period |  |  |  |  |  |  |  | 36 months |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock issuance costs | 40,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments of notes payable |  |  | 765,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 225,000 |  |  |  |  |  |  |  |  |  |
Common stock issued, shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,400,000 |  |  |  |
Common stock price per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1.50 |  |  |  |
Common stock issued, value |  |  | 1,460,000 | 1,767,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,100,000 |  |  |  |
Percentage of ownership in the remaining partnership after sale of interest |  |  | 51.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 51.40% |  | 50.00% |  |  |  |  |  |  |
Number of board of directors |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7 |  |  |  |  |  |  |  |
Number of directors to be designated |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 |  |  |  |  |  |  |  |
Right of first refusal to purchase additional securities term in years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 years |  |  |  |  |  |
Percentage Of Ownership Interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 80.00% |  |  |  |  |
Common share outstanding | 2,726,214 |  | 2,726,214 | 2,726,214 | 8,177,989 | 2,725,996 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued for rounding of fractional shares resulting from reverse split |  | 218 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reverse stock split, conversion ratio |  | 0.3333 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares available for issuance |  |  |  |  |  |  |  |  | 500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share available for future grants |  |  |  |  |  |  |  |  | 324,711 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock based compensation expense |  |  | 69,000 | 61,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options granted, shares |  |  | 34,000 |  |  |  |  |  |  | 34,000 | 4,000 |  |  | 53,233 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options granted, exercise price |  |  | $ 1.37 |  |  |  |  |  |  |  | $ 1.56 | $ 1.31 | $ 2.12 | $ 1.56 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options granted, per-share weighted average fair value |  |  |  |  |  |  |  |  |  |  | $ 1.26 | $ 1.07 | $ 1.79 | $ 1.26 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining total unrecognized compensation cost related to unvested stock-based arrangements | 23,000 |  | 23,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Employee service share-based compensation, nonvested awards, total compensation cost not yet recognized, period for recognition |  |  | 1 year 2 months 16 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, maturity term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 years
Warrants issued to purchase common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 33,334 |  |  |  |  |  |  |  |  |  |  |  |  | 37,537
Common stock price per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3.33
Fair value of warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 79,000 |
Risk free interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.70% |
Expected life of warrant |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 years |
Expected dividend yield |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.00% |
Debt instrument, discount amortization period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 36 months |
Exercise price as percentage of fair value of common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Number of trading days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20 days |  |  |  |  |  |  |  |  |  |  |  |  |
Class of warrant or right, exercise price of warrants or rights |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.25 | 3.24 |  |  |  |  |  |  |  |  |  |  |
Debt instrument, maturity date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Dec. 12, 2012 |  |  |  |  |  |  |  |  |  |  |  |  |
Profit and losses allocation percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 51.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |

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