Deferred Compensation Plans (Details)	9 Months Ended
Jan. 25, 2013
Deferred Compensation Arrangements [Abstract]
Defined contribution, maximum matched eligible earning (in Percent)	6.00%
Defined contribution plan, vesting period (in Duration)	5 years
Deferred compensation, maximum percent of annual salary employee can defer, percentage	50.00%
Percent of bonus or performance-based compensation eligible for deferral (in Percent)	100.00%

The percent of bonus or performance-based compensation eligible for deferral until the earlier of (i) termination of employment or (ii) an elected distribution date, available to a select group of management or highly compensated employees.

No definition available.

Name:	cybx_PercentOfBonusOrPerformanceBasedCompensationEligibleForDeferralInPercent
Namespace Prefix:	cybx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration