Quarterly report pursuant to Section 13 or 15(d)

Debt (Details)

v3.7.0.1
Debt (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 29, 2017
Jun. 30, 2016
Jun. 29, 2017
Jun. 30, 2016
Dec. 29, 2016
Debt Instrument [Line Items]          
Loss on extinguishment of debt $ 5,442 $ 153 $ 5,442 $ 153  
Total debt at par value 186,050   186,050   $ 400,000
Less: unamortized discount and debt issuance costs 4,225   4,225   9,257
Net carrying amount 181,825   181,825   390,743
Level 3          
Debt Instrument [Line Items]          
Fair value $ 186,436   $ 186,436   $ 400,000