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
	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%