Geographic and Significant Customer Information (Details 2) (Accounts Receivable [Member])	9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013
SK Hynix [Member]
Revenue, Major Customer [Line Items]
Customers accounted for 10% or more of total accounts receivable	26.00%	22.00%
Taiwan Semiconductor Mfg. Co. [Member]
Revenue, Major Customer [Line Items]
Customers accounted for 10% or more of total accounts receivable		12.00%
Global Foundries [Member]
Revenue, Major Customer [Line Items]
Customers accounted for 10% or more of total accounts receivable	14.00%
Samsung Electronics Co. Ltd. [Member]
Revenue, Major Customer [Line Items]
Customers accounted for 10% or more of total accounts receivable		27.00%
Intel Corporation [Member]
Revenue, Major Customer [Line Items]
Customers accounted for 10% or more of total accounts receivable		14.00%
Micron Technology, Inc. [Member]
Revenue, Major Customer [Line Items]
Customers accounted for 10% or more of total accounts receivable	12.00%