Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 28, 2015	Dec. 28, 2014	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014
Valuation Allowance [Line Items]
Current	$ 0		$ 187	$ 0	$ 219
Deferred	(2,460)		(1,352)	(6,199)	(5,142)
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	2,460	$ 24,300	0	6,199	0
Provision (benefit) for income taxes	0		$ (1,165)	0	$ (4,923)
Effective Income Tax Rate			33.90%		33.90%
Deferred Tax Assets, Valuation Allowance	33,600			33,600
Unrecognized Tax Benefits	0	0		0
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	0	$ 0		0
State and Local Jurisdiction [Member]
Valuation Allowance [Line Items]
Deferred Tax Assets, Valuation Allowance	3,700			3,700
Domestic Tax Authority [Member]
Valuation Allowance [Line Items]
Operating Loss Carryforwards	$ 44,400			$ 44,400