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Stockholders' Equity and Stock-Based Compensation (Details) - USD ($)		12 Months Ended
	Apr. 22, 2017	Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015	Dec. 27, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Excess Stock, Shares Authorized		13,100,000
Proceeds from exercise of stock options and warrants		$ 0	$ 0	$ 86,047
Stock-based compensation		2,296,131	$ 2,425,326	$ 3,145,479
Stock Issued During Period, Value, Treasury Stock Reissued		$ 24,664,250
Unvested Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value		$ 3.31	$ 3.21	$ 3.82	$ 3.75
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		1,152,000	1,663,000	1,255,696
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized		$ 6,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		640,000
Restricted stock and phantom stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		20 days
2010 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares that may be issued		1,300,000
Period 1 | Unvested Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period		1 year
Period 2 | Unvested Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period		2 years
Period 3 | Unvested Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period		4 years
Range One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period		1 year
Market Price Of Common Stock Range Low		$ 5.25
Range Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period		2 years
Range Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period		4 years
Sale of Stock to Goertek
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sale of Stock, Number of Shares Issued in Transaction	7,589,000
Stock Issued During Period, Value, Treasury Stock Reissued	$ 24,664,250
Sale of Stock, Price Per Share	$ 3.25
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	10.10%
Accumulated Deficit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Gain (Loss) on Sale of Treasury Stock	$ 800,000	$ (800,000)

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