XML 45 R45.htm IDEA: XBRL DOCUMENT v2.4.0.6
Convertible Senior Notes - Additional Information (Detail) (USD $)
Share data in Thousands, except Per Share data, unless otherwise specified
6 Months Ended 12 Months Ended
Jun. 25, 2012
Day
Year
Jun. 27, 2011
Dec. 31, 2011
Dec. 31, 2008
3.25% Convertible Senior Notes Due May 15, 2015
Debt Instrument [Line Items]        
Convertible Notes, effective interest rate 8.37% 8.37%   3.25%
Convertible Notes, maturity date description       2015-05-15
Convertible Notes, face amount       $ 175,000,000
Unamortized debt issuance costs 2,091,000   2,406,000  
Unamortized Convertible Note discount and debt issuance costs, amortization period 2.9      
Conversion rate, shares 62.6449      
Common stock conversion price $ 1      
Minimum days within prior period common stock price is in excess 20      
Period of time immediately preceding calendar quarter (days) 30      
Amount of excess necessary to be able to exercise conversion 130.00%      
Period of time when person can exercise conversion (days) 5      
Consecutive Trading Day Period Being Observed 10      
Product deficit over observed period 98.00%      
Trading Day Observation Period (days) 60      
Maximum number of shares issuable upon conversion 13,978      
Repurchase amount in the event of a fundamental change or certain default events 100.00%      
Warrants sold to purchase of additional common stock May 15, 2015      
Warrants sold to purchase of additional common stock 10,963      
Price per share of additional common stock purchased $ 18.15      
Warrants beginning, expiration date Aug. 01, 2015      
Warrants ending, expiration date Feb. 01, 2016      
Reduction of potential dilution by effectively increasing conversion price of the Convertible Notes $ 18.15