Annual report pursuant to Section 13 and 15(d)

Subsequent Events (Details)

v2.4.1.9
Subsequent Events (Details) (USD $)
 3 Months Ended 12 Months Ended 0 Months Ended
Dec. 31, 2014
Sep. 27, 2014
Jun. 28, 2014
Mar. 29, 2014
Dec. 31, 2013
Sep. 28, 2013
Jun. 29, 2013
Mar. 30, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Feb. 12, 2015
Subsequent Event [Line Items]                        
Cash dividends declared per common share (in dollars per share) $ 0.125us-gaap_CommonStockDividendsPerShareDeclared $ 0.125us-gaap_CommonStockDividendsPerShareDeclared $ 0.10us-gaap_CommonStockDividendsPerShareDeclared $ 0.10us-gaap_CommonStockDividendsPerShareDeclared $ 0.10us-gaap_CommonStockDividendsPerShareDeclared $ 0.00us-gaap_CommonStockDividendsPerShareDeclared $ 0.00us-gaap_CommonStockDividendsPerShareDeclared $ 0.00us-gaap_CommonStockDividendsPerShareDeclared $ 0.45us-gaap_CommonStockDividendsPerShareDeclared $ 0.10us-gaap_CommonStockDividendsPerShareDeclared $ 0.05us-gaap_CommonStockDividendsPerShareDeclared  
Subsequent Event                        
Subsequent Event [Line Items]                        
Cash dividends declared per common share (in dollars per share)                       $ 0.125us-gaap_CommonStockDividendsPerShareDeclared
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember