Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2012

Summary of Significant Accounting Policies [Abstract]

Accounts receivable are reported net of allowances for contractual adjustments and doubtful accounts

	September 30, 2012		December 31, 2011
Allowance for contractual adjustments	$	1,680,078	$	1,563,324
Allowance for doubtful accounts		1,480,663		1,537,288
Total	$	3,160,741	$	3,100,612

Allowances for contractual adjustments and doubtful accounts

	Contractual Adjustments			Doubtful Accounts			Total
Balance at December 31, 2011	$	1,563,324		$	1,537,288		$	3,100,612
Provisions		2,647,808			1,024,207			3,672,015
Write-offs, net of recoveries		(2,531,054	)		(1,080,832	)		(3,611,886	)
Balance at September 30, 2012	$	1,680,078		$	1,480,663		$	3,160,741

The aging of the Company's accounts receivable

	September 30, 2012		December 31, 2011
1 to 60 days	$	1,911,031	$	1,902,197
61 to 90 days		425,082		357,775
91 to 120 days		247,703		268,436
121 to 180 days		338,775		260,134
181 to 360 days		341,965		306,905
Greater than 360 days		—		—
Total	$	3,264,556	$	3,095,447