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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Dec. 29, 2017
Dec. 30, 2016
Jan. 01, 2016
Cash flows from operating activities:      
Net loss $ (2,139) $ (12,129) $ (6,533)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:      
Depreciation of property, plant, and equipment 3,133 2,664 2,196
Amortization of intangibles 221 228 205
Deferred income taxes (547) (1,364) 473
Change in net pension liability 186 491 190
Loss on disposal of property and equipment 623 222 0
Stock-based compensation expense 3,161 8,558 3,304
Provision for sales returns and bad debts 463 205 345
Inventory provision 1,739 1,610 1,799
Changes in working capital:      
Accounts receivable (1,857) (771) (4,952)
Inventories 312 213 (1,472)
Prepayments, deposits, and other current assets (64) (851) 856
Accounts payable (2,501) 1,007 14
Other current liabilities 123 966 1,413
Net cash provided by (used in) operating activities 2,853 1,049 (2,162)
Cash flows from investing activities:      
Acquisition of property and equipment (1,046) (3,205) (2,045)
Sale of property and equipment 0 0 2
Net cash used in investing activities (1,046) (3,205) (2,043)
Cash flows from financing activities:      
Repayment of capital lease obligations (1,300) (424) (391)
Proceeds from sale-leaseback transactions 0 1,546 0
Repurchase of employee common stock for taxes withheld (234) (611) 0
Proceeds from vested restricted stock and exercise of stock options 3,970 2,438 2,168
Proceeds from vested restricted stock 1 4 2
Proceeds from the exercise of warrants 0 0 2,800
Net cash provided by financing activities 2,437 2,953 4,579
Effect of exchange rate changes on cash, cash equivalents and restricted cash 279 (200) 15
Increase in cash, cash equivalents and restricted cash 4,523 597 389
Cash, cash equivalents and restricted cash, at beginning of year 14,118 13,521 13,132
Cash, cash equivalents and restricted cash, at end of year $ 18,641 $ 14,118 $ 13,521