Non-Controlling Interest - Member Interests in Predecessor (Detail)

v2.4.0.8

Non-Controlling Interest - Member Interests in Predecessor (Detail)	3 Months Ended	12 Months Ended		3 Months Ended	12 Months Ended		3 Months Ended	12 Months Ended		0 Months Ended
	Dec. 31, 2012 MissionPoint HA Parallel Fund, L.P. [Member]	Sep. 30, 2012 MissionPoint HA Parallel Fund, L.P. [Member]	Sep. 30, 2011 MissionPoint HA Parallel Fund, L.P. [Member]	Dec. 31, 2012 Jeffrey W. Eckel, Chief Executive Officer [Member]	Sep. 30, 2012 Jeffrey W. Eckel, Chief Executive Officer [Member]	Sep. 30, 2011 Jeffrey W. Eckel, Chief Executive Officer [Member]	Dec. 31, 2012 Other Management and Employees of the Predecessor [Member]	Sep. 30, 2012 Other Management and Employees of the Predecessor [Member]	Sep. 30, 2011 Other Management and Employees of the Predecessor [Member]	Apr. 23, 2013 Scenario, Previously Reported [Member] MissionPoint HA Parallel Fund, L.P. [Member]	Apr. 23, 2013 Scenario, Previously Reported [Member] Jeffrey W. Eckel, Chief Executive Officer [Member]	Apr. 23, 2013 Scenario, Previously Reported [Member] Other Management and Employees of the Predecessor [Member]
Schedule Of Membership Interests [Line Items]
Member interests in the Predecessor	70.00%	75.00%	75.00%	18.00%	20.00%	20.00%	12.00%	5.00%	5.00%	70.00%	18.00%	12.00%