Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Jul. 02, 2016	Jan. 02, 2016	Jul. 22, 2015
Accrued payroll, bonuses and related expenses
Accrued payroll	$ 363	$ 448
Accrued bonuses	2,338	3,205
Accrued payroll taxes	1,144	636
Accrued vacation	926	539
Accrued severance	589	0
Other	225	297
Employee-related Liabilities, Current	5,585	5,125
Other accrued liabilities
Sales and value-added taxes payable	756	478
Lease termination liability	132	135
Put option liability	0	102
Accrued income taxes	402	376
Accrued acquisition consideration	57	327	$ 1,875
Accrued professional fees	97	604
Other	746	229
Other Accrued Liabilities, Current	$ 2,190	$ 2,251