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	9 Months Ended		15 Months Ended
	Jun. 30, 2013	Jun. 30, 2013	Jul. 01, 2012	Jul. 01, 2013
HGI [Member]
Options (in shares):
Stock options outstanding at September 30, 2012		2,285
Granted	0	1,528	2,215
Exercised		0
Forfeited or expired		(33)
Stock options outstanding at June 30, 2013	3,780	3,780
Stock options vested and exercisable at June 30, 2013		865
Stock options outstanding and expected to vest	2,915	2,915
Weighted Average Exercise Price (in dollars per share):
Stock options outstanding at September 30, 2012		$ 4.96
Granted		$ 8.52
Exercised		$ 0.00
Forfeited or expired		$ 6.18
Stock options outstanding at June 30, 2013	$ 6.39	$ 6.39
Stock options vested and exercisable at June 30, 2013		$ 6.12
Stock options outstanding and expected to vest	$ 6.46	$ 6.46
Weighted Average Grant Date Fair Value (in dollars per share):
Stock options outstanding at September 30, 2012		$ 1.77
Granted		$ 3.53
Exercised		$ 0.00
Forfeited or expired		$ 2.32
Stock options outstanding at June 30, 2013	$ 2.47	$ 2.47
Stock options vested and exercisable at June 30, 2013		$ 2.33
Stock options outstanding and expected to vest	$ 2.52	$ 2.52
FGL [Member]
Options (in shares):
Stock options outstanding at September 30, 2012		201
Granted	194	194	205	207
Exercised		(27)
Forfeited or expired		0
Stock options outstanding at June 30, 2013	368	368
Stock options vested and exercisable at June 30, 2013		0
Stock options outstanding and expected to vest	301	301
Weighted Average Exercise Price (in dollars per share):
Stock options outstanding at September 30, 2012		$ 38.20
Granted		$ 49.45
Exercised		$ 38.14
Forfeited or expired		$ 0.00
Stock options outstanding at June 30, 2013	$ 43.77	$ 43.77
Stock options vested and exercisable at June 30, 2013		$ 0.00
Stock options outstanding and expected to vest	$ 43.77	$ 43.77
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		$ 0.00
Stock options outstanding at June 30, 2013	$ 3.88	$ 3.88
Stock options vested and exercisable at June 30, 2013		$ 0.00
Stock options outstanding and expected to vest	$ 3.88	$ 3.88