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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 29, 2019 | Mar. 30, 2018
Cash flows from operating activities: |  |
Net income | $ 1,367 | $ 583
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation of property, plant, and equipment | 1,222 | 549
Amortization of intangibles | 8 | 9
Deferred income taxes | 79 | 92
Change in net pension liability | 119 | 87
Loss on disposal of property and equipment |  | 6
Stock-based compensation expense | 2,641 | 1,301
Provision for sales returns and bad debts | (34) | 514
Inventory provision | 455 | 506
Changes in working capital: |  |
Accounts receivable | (554) | (2,755)
Inventories | (7) | (396)
Prepayments, deposits, and other current assets | (2,317) | (730)
Accounts payable | (185) | 2,038
Other current liabilities | (2,063) | 726
Net cash provided by operating activities | 731 | 2,530
Cash flows from investing activities: |  |
Acquisition of property and equipment | (2,203) | (965)
Acquisition of patents and licenses | (30) |
Net cash used in investing activities | (2,233) | (965)
Cash flows from financing activities: |  |
Repayment of finance lease obligations | (365) | (380)
Repayment on line of credit | (499) |
Proceeds from the exercise of stock options | 622 | 453
Proceeds from vested restricted stock | 2 | 1
Net cash provided by (used in) financing activities | (240) | 74
Effect of exchange rate changes on cash, cash equivalents and restricted cash | (24) | 612
Increase (decrease) in cash, cash equivalents and restricted cash | (1,766) | 2,251
Cash, cash equivalents and restricted cash, at beginning of year | 103,999 | 18,641
Cash, cash equivalents and restricted cash, at end of year | $ 102,233 | $ 20,892

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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
Name: | us-gaap_ShareBasedCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration