Stockholders' Equity Share-based Compensation Plans Activity (Details) (USD $)	12 Months Ended						3 Months Ended	12 Months Ended						2 Months Ended	12 Months Ended		36 Months Ended	12 Months Ended			12 Months Ended	3 Months Ended	12 Months Ended		1 Months Ended		12 Months Ended
	Mar. 31, 2013	Mar. 31, 2013 Property and Equipment	Mar. 31, 2012 Property and Equipment	Mar. 31, 2011 Property and Equipment	Mar. 31, 2013 Stock Options		Jun. 30, 2011 Stock Options Non Employee Entertainment Essentials Installment	Mar. 31, 2012 Stock Options Non Employee Entertainment Essentials	Mar. 31, 2013 Stock Options Non Employee Entertainment Essentials Property and Equipment Capitalized software	Mar. 31, 2013 Restricted Stock Units (RSUs)		Mar. 31, 2011 Restricted Stock Units (RSUs)	Mar. 31, 2013 Stock Settled Stock Appreciation Rights	May 23, 2013 Performance Based Stock Options	Mar. 31, 2013 Performance Based Stock Options	Mar. 31, 2010 Performance Based Stock Options employee	Mar. 31, 2012 Performance Based Stock Options	Mar. 31, 2013 2011 Employee Stock Purchase Plan	Mar. 31, 2013 2011 Employee Stock Purchase Plan Common Stock	Aug. 24, 2011 2011 Employee Stock Purchase Plan Common Stock	Mar. 31, 2013 Shareholders Rights Plan Right	Sep. 30, 2010 Director Deferred Stock Unit (DSU)	Mar. 31, 2013 Director Deferred Stock Unit (DSU)		Oct. 31, 2012 Executive Officer Restricted Stock Units (RSUs)	Nov. 30, 2011 Executive Officer Restricted Stock Units (RSUs)	Mar. 31, 2013 Executive Officer Restricted Stock Units (RSUs)	Mar. 31, 2013 Selling and administrative expenses		Mar. 31, 2012 Selling and administrative expenses		Mar. 31, 2011 Selling and administrative expenses		Mar. 31, 2011 Selling and administrative expenses Restricted Stock Units (RSUs)	Mar. 31, 2013 Selling and administrative expenses Director Deferred Stock Unit (DSU)	Mar. 31, 2013 Selling and administrative expenses Executive Officer Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options, beginning					1,878,913	[1]
Granted					907,674	[1]	40,000									109,750
Exercised					(49,648)	[1]
Forfeited					(109,950)	[1]								(25,000)	(31,250)		(41,000)
Options, ending					2,626,989	[1]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Weighted average exercise price, beginning					$ 20.57
Weighted average exercise price, granted					$ 20.05
Weighted average exercise price, exercised					$ 6.50
Weighted average exercise price, forfeited					$ 24.43
Weighted average exercise price, ending					$ 20.49
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Aggregate intrinsic value of options outstanding					$ 53,800,000
Weighted average remaining contractual term of options outstanding					7 years 10 months 24 days
Number of options exercisable					571,408
Weighted average exercise price of options exercisable					$ 17.70
Aggregate intrinsic value of options exercisable					10,100,000
Weighted average remaining contractual term of options exercisable					6 years 4 months 24 days
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Outstanding, beginning										238,816			75,000										145,272
Granted										0			0										34,014
Vested or issued										0		237,280	0										0
Forfeited										0			0										0
Outstanding, ending										238,816	[2]		75,000										179,286	[3]
Vested but not issued																							166,914
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Weighted Average Base Price
Weighted average base price, beginning													$ 14.50
Weighted average base price, granted													$ 0.00
Weighted average base price, issued													$ 0.00
Weighted average base price, forfeited													$ 0.00
Weighted average base price, ending													$ 14.50
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Weighted Average Grant Date Fair Value [Roll Forward]
Weighted average grant date fair value, beginning										$ 6.08			$ 5.33										$ 14.88
Weighted average grant date fair value, granted										$ 0.00			$ 0.00										$ 17.64
Weighted average grant date fair value, issued										$ 0.00			$ 0.00										$ 0.00
Weighted average grant date fair value, forfeited										$ 0.00			$ 0.00										$ 0.00
Weighted average grant date fair value, ending										$ 4.09	[2]		$ 5.33										$ 15.40	[3]
Number of employees granted performance-based stock options																3
Vesting period (in years)																3 years
Exercise price range, lower limit							$ 17.43									$ 15.44
Exercise price range, upper limit							$ 22.20									$ 20.89
Fair value of performance-based stock options grant																700,000
Performance-based stock options vested in period															6,250
Number of Directors departed with accelerated DSU vesting																						2
Shares vested under accelerated DSU vesting during period																						24,750
Share based compensation expense from accelerated vesting																																			500,000
Shares withheld to pay associated withholding taxes on behalf of employees																																		84,173
Fair value of modification to RSU award																									400,000	600,000
RSU modification extended expiration period (in years)							10 years																		2 years
Incremental compensation cost to be recognized																											100,000									61,000
Stock-based compensation recognized in results of operations																												21,792,000	[4]	5,118,000	[4]	6,714,000	[4]	400,000
Number of equal vesting installments							4
Stock-based compensation capitalized as a component of property and equipment		512,000	362,000	474,000				100,000	100,000
Unrecognized stock based compensation expense	13,100,000
Unrecognized stock based compensation expense, period for recognition (in years)	3 years 0 months 22 days
Shares authorized for issuance under the 2011 Employee Stock Purchase Plan																				100,000
Shares issued under the Employee Stock Purchase Plan																		37,328
Common stock issued pursuant to employee stock purchase plan																		511,000	500,000
Weighted average purchase price under the Employee Stock Purchase Plan																			$ 13.68
Shares available for grant, Employee Stock Purchase Plan																			62,672
Cash received for shares sold under the Employee Stock Purchase Plan																			$ 200,000
Percent of outstanding common stock required to be acquired for Shareholder's Rights to be effective																					15.00%
Percent of outstanding common stock to be included in tender offer for Shareholder's Rights to be effective																					15.00%
Redemption price per right allowed in absence of acquisition by beneficial owner																					$ 0.001

[1] Options outstanding include performance based awards discussed below.

[2] Change in weighted average grant date fair value per RSU as of March 31, 2013 reflects the revaluation of an outstanding award as of the modification date of October 2012.

[3] Of the 179,286 DSUs outstanding at March 31, 2013, 166,914 were vested but not issued. The DSUs are not issued until the director holding such DSUs retires from the Board.

[4] For the years ended March 31, 2013, 2012 and 2011, we recognized $15.9 million, $0.5 million, and $2.4 million, respectively, in expense related to our stock-based compensation agreement with DISH. See Note 18.