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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Apr. 02, 2017
Mar. 27, 2016
OPERATING ACTIVITIES:    
Net income $ 1,661 $ 281
Adjustments to reconcile net income to net cash provided by (used in) operating activities:    
Depreciation 503 589
Amortization of intangible assets 105 137
Amortization of financing fees 18 19
Stock-based compensation 40 181
Deferred income tax benefit 36 42
Changes in operating assets and liabilities:    
Accounts receivable (537) (2,407)
Inventories 771 (1,138)
Prepaid expenses and other assets 50 41
Accounts payable and other liabilities 92 (620)
Net cash provided by (used in) operating activities 2,739 (2,875)
INVESTING ACTIVITIES:    
Acquisition of Accutronics, net of cash acquired (9,857)
Cash paid for property, equipment and improvements (581) (69)
Change in restricted cash (7) 0
Net cash used in investing activities (588) (9,926)
FINANCING ACTIVITIES:    
Proceeds from debt borrowings 1,156
Proceeds from stock option exercise 741 14
Net cash provided by financing activities 741 1,170
Effect of exchange rate changes on cash 74 (3)
INCREASE (DECREASE) IN CASH 2,966 (11,634)
Cash, beginning of period 10,629 14,393
Cash, end of period $ 13,595 $ 2,759