Capital Stock (Stock Options) (Details) (Stock Options [Member], USD $)	0 Months Ended		12 Months Ended
	Sep. 10, 2007		Mar. 31, 2012		Mar. 31, 2011		Mar. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, beginning of period			3,310,000		3,360,000		3,899,166
Outstanding, Weighted Average Exercise Price			9.75		9.75		9.75
Granted			250,000		0		110,000
Granted, Weighted Average Exercise Price			13.80		0.00		5.41
Exercised			(403,332)		0		0
Exercised, Weighted Average Exercise Price			8.73		0.00		0.00
Forfeited or expired			0		(50,000)		(649,166)
Forfeited or expired, Weighted Average Exercise Price			0.00		10.00		8.97
Outstanding, end of period			3,156,668		3,310,000		3,360,000
Outstanding, Weighted Average Exercise Price			10.20		9.75		9.75
Outstanding, Weighted Average Remaining Contractual Term In Years			5.12
Outstanding, Aggregate Intrinsic Value			11,738,678
Outstanding, vested or expected to vest in the future			3,154,835
Outstanding, vested or expected to vest in the future, Weighted Average Exercise Price			10.20
Outstanding, vested or expected to vest in the future, Weighted Average Remaining Contractual Term In Years			5.12
Outstanding, vested or expected to vest in the future, Aggregate Intrinsic Value			11,723,070
Exercisable			2,870,002
Exercisable, Weighted Average Exercise Price			9.95
Exercisable, Weighted Average Remaining Contractual Term In Years			4.67
Exercisable, Aggregate Intrinsic Value			11,396,516
Granted, weighted average grant date fair value			5.25		0		3.21
Exercised, total intrinsic value			2,500,000		0		0
Shares cancelled to fund tax withholding obligations upon exercise of stock options			0
Long-term Incentive Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, beginning of period			2,710,000	[1]	2,760,000	[1]	3,299,166	[1]
Granted			250,000	[1]	0	[1]	110,000	[1]
Exercised			(53,332)	[1]	0	[1]	0	[1]
Forfeited or expired			0	[1]	(50,000)	[1]	(649,166)	[1]
Outstanding, end of period			2,906,668	[1]	2,710,000	[1]	2,760,000	[1]
Outstanding, vested or expected to vest in the future			2,904,835	[1]
Exercisable			2,620,002	[1]
Employee Agreement Outside Company Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, beginning of period			600,000	[2]	600,000	[2]	600,000	[2]
Granted	600,000	[2]	0	[2]	0	[2]	0	[2]
Exercised			(350,000)	[2]	0	[2]	0	[2]
Forfeited or expired			0	[2]	0	[2]	0	[2]
Outstanding, end of period			250,000	[2]	600,000	[2]	600,000	[2]
Outstanding, vested or expected to vest in the future			250,000	[2]
Exercisable			250,000	[2]

[1] Issued under our long-term incentive plans.

[2] On September 10, 2007, in connection with the acquisition of Mandate Pictures (see Note 15), two executives entered into employment agreements with LGF. Pursuant to the employment agreements, the executives were granted an aggregate of 600,000 stock options, all of which have vested. The options were granted outside of our long-term incentive plans.