Stock Compensation - Summary of Stock Options Outstanding and Related Activity (Detail) (Stock option awards, USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
HGI
Options (in shares):
Stock options outstanding at September 30, 2012	2,285
Granted	1,734	2,275
Exercised	(32)
Forfeited or expired	(33)
Stock options outstanding at September 30, 2013	3,954	2,285
Stock options vested and exercisable at September 30, 2013	833
Stock options outstanding and expected to vest	3,121
Weighted Average Exercise Price (in dollars per share):
Stock options outstanding at September 30, 2012	$ 4.96
Granted	$ 8.57
Exercised	$ 6.08
Forfeited or expired	$ 6.18
Stock options outstanding at September 30, 2013	$ 6.52	$ 4.96
Stock options vested and exercisable at September 30, 2013	$ 6.12
Stock options outstanding and expected to vest	$ 6.63
Weighted Average Grant Date Fair Value (in dollars per share):
Stock options outstanding at September 30, 2012	$ 1.77
Granted	$ 3.56
Exercised	$ 2.23
Forfeited or expired	$ 2.32
Stock options outstanding at September 30, 2013	$ 2.55	$ 1.77
Stock options vested and exercisable at September 30, 2013	$ 2.34
Stock options outstanding and expected to vest	$ 2.60
FGL
Options (in shares):
Stock options outstanding at September 30, 2012	201
Granted	195	207
Exercised	(31)
Forfeited or expired	(30)
Stock options outstanding at September 30, 2013	335	201
Stock options vested and exercisable at September 30, 2013	40
Stock options outstanding and expected to vest	283
Weighted Average Exercise Price (in dollars per share):
Stock options outstanding at September 30, 2012	$ 38.20
Granted	$ 49.49
Exercised	$ 39.19
Forfeited or expired	$ 43.96
Stock options outstanding at September 30, 2013	$ 44.23	$ 38.20
Stock options vested and exercisable at September 30, 2013	$ 38.21
Stock options outstanding and expected to vest	$ 44.16
Weighted Average Grant Date Fair Value (in dollars per share):
Stock options outstanding at September 30, 2012	$ 3.90
Granted	$ 3.85
Exercised	$ 3.90
Forfeited or expired	$ 3.87
Stock options outstanding at September 30, 2013	$ 3.87	$ 3.90
Stock options vested and exercisable at September 30, 2013	$ 3.90
Stock options outstanding and expected to vest	$ 3.87