Long-Term Debt (Detail) (USD $)					9 Months Ended											9 Months Ended
	Sep. 30, 2013	Mar. 19, 2013	Dec. 31, 2012	Sep. 30, 2013 Discontinued Operations	Sep. 30, 2013 Discontinued Operations Notes payable on equipment		Sep. 30, 2013 Discontinued Operations Sleep center notes payable		Sep. 30, 2013 Discontinued Operations Notes payable on vehicles		Sep. 30, 2013 Discontinued Operations Equipment capital leases	Sep. 30, 2013 Discontinued Operations Equipment capital leases Minimum		Sep. 30, 2013 Discontinued Operations Equipment capital leases Maximum		Sep. 30, 2013 Senior bank debt Discontinued Operations
Debt Instrument [Line Items]
Debt instrument interest rate					6.00%	[1]	6.00%	[1]	2.90%	[1]		8.20%	[1]	11.50%	[1]	6.00%	[1]
Debt instrument maturity date					2013-12		2015-01		2013-12		2015-01					2013-12
Short-term debt	$ 7,316,083	$ 2,010,027	$ 2,007,597													$ 4,450,233
Total borrowings	19,269,159		17,504,090	131,754	30,220		38,835		3,119		59,580
Less: Current portion of long-term debt	(8,134,412)		(5,971,339)	(103,370)
Long-term debt	$ 11,134,747		$ 11,532,751	$ 28,384

[1] Effective rate as of September 30, 2013