Stockholders' Equity (Schedule of Public Offerings)(Details) $ in Millions |
12 Months Ended |
|---|---|
|
Dec. 28, 2014
USD ($)
shares
| |
| January Secondary Offering [Member] | |
| Schedule of Public Offerings [Line Items] | |
| Public offering date | Jan. 30, 2013 |
| Sale of stock (in shares) | shares | 5,175,000 |
| Proceeds from sale of common stock, net of underwriting fees | $ | $ 0 |
| April Secondary Offering [Member] | |
| Schedule of Public Offerings [Line Items] | |
| Public offering date | Apr. 17, 2013 |
| Sale of stock (in shares) | shares | 3,000,000 |
| Proceeds from sale of common stock, net of underwriting fees | $ | $ 0 |