Basis of Presentation (Table)

9 Months Ended

Sep. 30, 2012

Accounting Changes and Error Corrections [Abstract]

Schedule of Error Corrections and Prior Period Adjustments [Table Text Block]

	March 31, 2012						December 31, 2011						December 31, 2010
	As Previously						As Previously						As Previously
	Filed		As Revised		Difference		Filed		As Revised		Difference		Filed		As Revised		Difference
Current deferred tax assets, net	$	-	$	20,609	$	20,609	$	-	$	20,218	$	20,218	$	-	$	9,776	$	9,776
Total current assets	$	60,230	$	80,839	$	20,609	$	64,699	$	84,917	$	20,218	$	64,833	$	74,609	$	9,776
Noncurrent deferred tax assets, net	$	37,603	$	16,994	$	(20,609)	$	40,000	$	19,782	$	(20,218)	$	41,883	$	32,107	$	(9,776)
Total assets	$	433,285	$	433,285	$	-	$	449,542	$	449,542	$	-	$	464,166	$	464,166	$	-

Schedule of change in estimated average membership life [Table Text Block]

	Estimated Average Restricted Student Member Life
Period	2012	2011
Three months ended March 31	25 months	27 months
Three months ended June 30	27 months	27 months
Three months ended September 30	28 months	28 months