Stock-Based Compensation (Details) (USD $)	3 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Jun. 30, 2011
Stock-based compensation, additional disclosures [Abstract]
Payments related to tax withholding on vested RSUs	$ 1,187,000	$ 796,000
Recorded as expense:
Total stock-based compensation	3,708,000	2,697,000
Stock Options [Member]
General award terms [Abstract]
Award vesting period (in years)	4Y
Stock options contractual term, minimum (in years)	7Y
Stock options contractual term, maximum (in years)	10Y
Stock-based compensation accounting [Abstract]
Weighted average fair value of options granted (in dollars per share)	$ 6.46	$ 4.83
Weighted average assumptions:
Risk-free interest rate (in hundredths)	1.20%	1.40%
Expected dividend yield (in hundredths)	0.00%	0.00%
Expected life (in years)	4.6	4.5
Expected volatility factor (in hundredths)	49.60%	52.90%
Stock option activity [Roll Forward]
Outstanding, beginning of period (in shares)	4,724,305
Granted (in shares)	751,072
Exercised (in shares)	(243,024)
Cancelled / Forfeited (in shares)	(24,309)
Outstanding, end of period (in shares)	5,208,044
Vested and exercisable (in shares)	3,872,167
Vested and expected to vest (in shares)	5,035,652
Stock options activity, additional disclosure [Abstract]
Weighted average exercise price, beginning of period (in dollars per share)	$ 8.69		$ 7.64
Weighted average exercise price, granted (in dollars per share)	$ 15.50
Weighted average exercise price, exercised (in dollars per share)	$ 9.17
Weighted average exercise price, cancelled/forfeited (in dollars per share)	$ 10.28
Weighted average exercise price, end of period (in dollars per share)	$ 8.69		$ 7.64
Weighted average exercise price, vested and exercisable (in dollars per share)	$ 7.07
Weighted average exercise price, vested and expected to vest (in dollars per share)	$ 8.53
Weighted average remaining contractual term, outstanding, end of period (in years)	5.5
Weighted average remaining contractual term, vested and exercisable (in years)	4.2
Weighted average remaining contractual term, vested and expected to vest (in years)	5.3
Aggregate intrinsic value, outstanding, beginning of period	34,434,000		45,058,000
Aggregate intrinsic value, outstanding, end of period	34,434,000		45,058,000
Aggregate intrinsic value, vested and exercisable	31,775,000
Aggregate intrinsic value, vested and expected to vest	34,091,000
Stock-based compensation, additional disclosures [Abstract]
Total unrecognized compensation cost	6,700,000
Total unrecognized compensation cost, period of recognition (in years)	3.3
Total intrinsic value of options exercised	1,800,000	100,000
Cash proceeds from option exercises	2,200,000	100,000
Payments related to tax withholding on vested RSUs	1,200,000	800,000
Common stock reserved for future issuance or settlement under equity compensation plans (in shares)	13,100,000
Restricted Stock Units [Member]
General award terms [Abstract]
Award vesting period (in years)	4Y
Restricted stock units activity [Roll Forward]
Outstanding, beginning of period (in shares)	1,338,376
Granted (in shares)	893,107
Vested (in shares)	(248,703)
Cancelled / Forfeited (in shares)	(37,552)
Outstanding, end of period (in shares)	1,945,228
Vested and expected to vest (in shares)	1,684,334
Restricted stock units activity, additional disclosures [Abstract]
Weighted average grant date fair value, beginning of period (in dollars per share)	$ 12.41		$ 10.19
Weighted average grant date fair value, granted (in dollars per share)	$ 15.50	$ 10.93
Weighted average grant date fair value, vested (in dollars per share)	$ 11.78
Weighted average grant date fair value, cancelled/forfeited (in dollars per share)	$ 10.73
Weighted average grant date fair value, outstanding, end of period (in dollars per share)	$ 12.41		$ 10.19
Weighted average grant date fair value, expected to vest (in dollars per share)	$ 12.42
Stock-based compensation, additional disclosures [Abstract]
Total fair value of shares vested from RSU grants	3,800,000	2,400,000
Total unrecognized compensation cost	20,900,000
Total unrecognized compensation cost, period of recognition (in years)	3.0
Cost of service and other [Member]
Recorded as expense:
Total stock-based compensation	303,000	253,000
Selling and marketing [Member]
Recorded as expense:
Total stock-based compensation	1,170,000	896,000
Research and development [Member]
Recorded as expense:
Total stock-based compensation	348,000	289,000
General and administrative [Member]
Recorded as expense:
Total stock-based compensation	$ 1,887,000	$ 1,259,000