v3.7.0.1
Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($)
$ in Thousands
3 Months Ended
Apr. 01, 2017
Mar. 26, 2016
Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]      
Indefinite lived intangibles $ 242   $ 242
Finite-Lived Intangible Assets [Line Items]      
Accumulated Amortization (17,344)   (17,081)
Net Carrying Value 1,241    
Total Gross Carrying Value 18,827   18,789
Total Accumulated Amortization (17,344)   (17,081)
Total Net Carrying Value 1,483   1,708
Trademarks and trade names      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Value 4,401   4,394
Accumulated Amortization (4,224)   (4,200)
Net Carrying Value 177   194
Total Accumulated Amortization $ (4,224)   (4,200)
Weighted-Average Remaining Life (Years) 2 years 4 months 2 years 6 months  
Proprietary software      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Value $ 5,123   5,102
Accumulated Amortization (4,679)   (4,485)
Net Carrying Value 444   617
Total Accumulated Amortization $ (4,679)   (4,485)
Weighted-Average Remaining Life (Years) 1 year 1 month 1 year 4 months  
Non-compete agreements      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Value $ 128   127
Accumulated Amortization (124)   (120)
Net Carrying Value 4   7
Total Accumulated Amortization $ (124)   (120)
Weighted-Average Remaining Life (Years) 4 months 7 months 6 days  
Leasehold interests      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Value $ 170   170
Accumulated Amortization (118)   (111)
Net Carrying Value 52   59
Total Accumulated Amortization $ (118)   (111)
Weighted-Average Remaining Life (Years) 2 years 1 month 2 years 4 months  
Customer relationships      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Value $ 8,763   8,754
Accumulated Amortization (8,199)   (8,165)
Net Carrying Value 564   589
Total Accumulated Amortization $ (8,199)   $ (8,165)
Weighted-Average Remaining Life (Years) 5 years 11 months 6 years 1 month 6 days