Annual report pursuant to Section 13 and 15(d)

Leases - Additional Information (Detail)

v2.4.0.6
Leases - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 30, 2012
Subsequent Event
  
Operating Leased Assets [Line Items]  
Future lease commitment 3.5
Minimum
  
Operating Leased Assets [Line Items]  
Initial lease terms 10 years
Lease terms renewal 5 years
Lease expiry period 2016
Maximum
  
Operating Leased Assets [Line Items]  
Initial lease terms 20 years
Lease terms renewal 20 years
Lease expiry period 2032