Stock-Based Compensation (Narrative) (Details) - USD ($)	12 Months Ended
	Jan. 02, 2018	Jan. 03, 2017	Dec. 29, 2015	Dec. 31, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Number of shares available for grant	4,200,000
Unrecognized compensation cost	$ 2,500,000
Period for recognition	2 years 5 months 26 days
Risk-free interest rate	2.00%	1.20%	1.60%
Expected term (average in years)	6 years 1 month 6 days	5 years	5 years
Expected dividend yield	0.00%	0.00%	0.00%
Expected volatility	39.60%	37.00%	36.80%
Employee Stock Purchase Plan [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Number of shares authorized				750,000
Stock based compensation expense	$ 29,000
General and Administrative Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock based compensation expense	$ 1,700,000	$ 2,500,000	$ 1,700,000
2010 Stock Incentive Plan Post-Merger [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Number of shares authorized	3,750,500
Stock option term	10 years
Vesting period	4 years
Capitalized Internal Costs [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock based compensation expense	$ 178,000	222,000	229,000
Stock Option [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Exercises in period, intrinsic value	$ 0	$ 200,000	$ 4,200,000
Share-based Compensation Arrangement by Share-based Payment Award, Non-Vested Options, Vested in Period	177,491
Vested (in shares)		271,457	346,235
Estimated fair value	$ 800,000	$ 2,700,000	$ 3,400,000
Weighted average fair value (in dollars per share)	$ 1.74	$ 2.85	$ 5.04
Restricted Stock [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Vested Options, Vested in Period	100,871
Estimated fair value	$ 500,000
Granted (in shares)	328,106
Performance Shares
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Granted (in shares)	100,000,000
Risk-free interest rate	1.70%
Expected term (average in years)	3 years 4 months 24 days
Expected dividend yield	0.00%
Expected volatility	55.00%
Kevin Reddy [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock based compensation expense		$ 700,000
Minimum
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Estimated forfeiture rate (percentage)	0.00%
Maximum
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Estimated forfeiture rate (percentage)	10.00%