Deferred Compensation and Other Benefits - Additional Information (Details) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Jul. 01, 2016	Apr. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
ESBP [Member]
Deferred Compensation Text Details [Line Items]
Benefit plan, employer contributions	$ 200,000				$ 400,000
Estimated 2017 full year benefit payments	700,000				700,000
NDBP [Member]
Deferred Compensation Text Details [Line Items]
Net periodic pension cost	$ 14,000		$ 19,000		$ 29,000	$ 37,000
Targeted minimum return					4.00%
Guaranteed return					4.00%
Key Employee Non Qualified Deferred Compensation Plan [Member]
Deferred Compensation Text Details [Line Items]
Benefit plan, employer contributions		$ 100,000		$ 200,000
Key Employee Non Qualified Deferred Compensation Plan [Member] | Deferred Compensation and Other Benefits [Member]
Deferred Compensation Text Details [Line Items]
Common stock units issued under plan	0	0	0	5,000
Non Employee Director Deferred Compensation Plan [Member]
Deferred Compensation Text Details [Line Items]
Benefit plan, employer contributions	$ 100,000				$ 200,000