Stock Compensation - Summary of Stock Options Outstanding and Related Activity (Detail) (Stock option awards [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
HGI [Member]
Options (in shares):
Stock options outstanding at September 30, 2013	3,954
Granted	1,326	1,498
Exercised	(121)
Forfeited or expired	0
Stock options outstanding at December 31, 2013	5,159
Stock options vested and exercisable at December 31, 2013	1,723
Stock options outstanding and expected to vest	3,436
Weighted Average Exercise Price (in dollars per share):
Stock options outstanding at September 30, 2013	$ 6.52
Granted	$ 11.76
Exercised	$ 4.85
Forfeited or expired	$ 0.00
Stock options outstanding at December 31, 2013	$ 7.91
Stock options vested and exercisable at December 31, 2013	$ 6.93
Stock options outstanding and expected to vest	$ 8.40
Weighted Average Grant Date Fair Value (in dollars per share):
Stock options outstanding at September 30, 2013	$ 2.55
Granted	$ 5.06
Exercised	$ 1.72
Forfeited or expired	$ 0.00
Stock options outstanding at December 31, 2013	$ 3.21
Stock options vested and exercisable at December 31, 2013	$ 2.72
Stock options outstanding and expected to vest	$ 3.45
FGL [Member]
Options (in shares):
Stock options outstanding at September 30, 2013	335
Granted	0
Exercised	(28)
Forfeited or expired	(1)
Stock options outstanding at December 31, 2013	306
Stock options vested and exercisable at December 31, 2013	129
Stock options outstanding and expected to vest	167
Weighted Average Exercise Price (in dollars per share):
Stock options outstanding at September 30, 2013	$ 44.23
Granted	$ 0.00
Exercised	$ 41.79
Forfeited or expired	$ 45.55
Stock options outstanding at December 31, 2013	$ 44.44
Stock options vested and exercisable at December 31, 2013	$ 42.56
Stock options outstanding and expected to vest	$ 44.40
FGL [Member]
Options (in shares):
Stock options outstanding at September 30, 2013	0
Granted	191
Exercised	0
Forfeited or expired	0
Stock options outstanding at December 31, 2013	191
Stock options vested and exercisable at December 31, 2013	0
Weighted Average Exercise Price (in dollars per share):
Stock options outstanding at September 30, 2013	$ 0.00
Granted	$ 17.00
Exercised	$ 0.00
Forfeited or expired	$ 0.00
Stock options outstanding at December 31, 2013	$ 17.00
Stock options vested and exercisable at December 31, 2013	$ 0.00
Stock options outstanding and expected to vest	$ 17.00
Weighted Average Grant Date Fair Value (in dollars per share):
Stock options outstanding at September 30, 2013	$ 0.00
Granted	$ 3.30
Exercised	$ 0.00
Forfeited or expired	$ 0.00
Stock options outstanding at December 31, 2013	$ 3.30
Stock options vested and exercisable at December 31, 2013	$ 0.00
Stock options outstanding and expected to vest	$ 3.30