Percentage of Net Revenue and Total Accounts Receivable (Detail)	2 Months Ended		12 Months Ended
	Mar. 31, 2014		Mar. 31, 2015		Jan. 31, 2014
Sales Revenue, Net [Member] | Medicare/Medi-Cal [Member]
Accounts Receivable And Net Revenue [Line Items]
Concentration Risk, Percentage	14.30%		34.80%	[1]	17.80%
Sales Revenue, Net [Member] | L.A Care [Member]
Accounts Receivable And Net Revenue [Line Items]
Concentration Risk, Percentage	12.10%		13.20%		0.00%	[1]
Sales Revenue, Net [Member] | Healthnet [Member]
Accounts Receivable And Net Revenue [Line Items]
Concentration Risk, Percentage	0.00%	[1]	12.30%		0.00%	[1]
Sales Revenue, Net [Member] | Hollywood Presbyterian [Member]
Accounts Receivable And Net Revenue [Line Items]
Concentration Risk, Percentage	11.80%		0.00%	[1]	15.90%
Sales Revenue, Net [Member] | California Hospital [Member]
Accounts Receivable And Net Revenue [Line Items]
Concentration Risk, Percentage	11.60%		0.00%	[1]	13.90%
Accounts Receivable [Member] | Medicare/Medi-Cal [Member]
Accounts Receivable And Net Revenue [Line Items]
Concentration Risk, Percentage	21.70%		22.10%		31.50%

[1] Represents less than 10%