Quarterly report pursuant to Section 13 or 15(d)

Derivatives and Risk Management (Details)

v3.8.0.1
Derivatives and Risk Management (Details) - Interest Rate Cap - USD ($)
$ in Thousands
3 Months Ended
Mar. 29, 2018
Mar. 30, 2017
Dec. 28, 2017
Cash Flow Hedging      
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract]      
Gain (loss) reclassified from AOCI to earnings, effective portion $ 0 $ 0  
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net [Abstract]      
Gain (loss) recognition in other comprehensive income (loss), effective portion 430 $ (282)  
Designated as Hedging Instrument [Member] | Cash Flow Hedging      
Derivative [Line Items]      
Notional amount 102,500   $ 102,500
Derivative Asset, Noncurrent 1,258   710
AOCI, Net of Tax 247   (133)
Not Designated as Hedging Instrument [Member]      
Derivative [Line Items]      
Notional amount 102,500   102,500
Derivative Asset, Noncurrent 1,258   710
AOCI, Net of Tax $ (22)   $ (72)