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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 29, 2013 | Mar. 30, 2012
Cash flows from operating activities: |  |
Net income (loss) | $ 6,421 | $ (7,528)
Adjustments to reconcile net income (loss) to net cash provided by operating activities: |  |
Amortization of intangibles | 7,033 | 7,539
Depreciation | 4,040 | 3,798
Stock-based compensation | 3,986 | 4,800
Gain on sale of discontinued operations, net of tax | (14,956) |
Loss on impairment of fixed assets | 101 |
Deferred income taxes | (204) | (1,262)
Provision for inventories | 567 | 784
Allowance for doubtful accounts, returns and discounts | 1,116 | (180)
Excess tax benefits from stock-based compensation |  | (73)
Other non-cash adjustments, net | 408 | (8)
Changes in assets and liabilities: |  |
Accounts receivable | (10,888) | (1,683)
Inventories | 6,832 | 4,320
Prepaid expenses and other assets | (8,597) | 1,892
Accounts payable | (2,796) | 936
Deferred revenue | 2,667 | 2,740
Income taxes payable | (1,257) | (929)
Accrued and other liabilities | (216) | (7,255)
Net cash (used in) provided by operating activities | (5,743) | 7,891
Cash flows from investing activities: |  |
Purchases of investments | (25,908) | (36,654)
Proceeds from maturities of investments | 16,249 | 18,791
Proceeds from sales of investments | 4,000 | 1,042
Acquisition of property and equipment | (4,274) | (3,715)
Proceeds from sale of discontinued operations, net of selling costs | 44,336 |
Net cash provided by (used in) investing activities | 34,403 | (20,536)
Cash flows from financing activities: |  |
Payments for repurchase of common stock | (9,268) |
Proceeds from issuance of common stock, net | 2,508 | 2,479
Excess tax benefits from stock-based compensation |  | 73
Net cash (used in) provided by financing activities | (6,760) | 2,552
Effect of exchange rate changes on cash and cash equivalents | (106) | 129
Net increase (decrease) in cash and cash equivalents | 21,794 | (9,964)
Cash and cash equivalents at beginning of period | 96,670 | 90,983
Cash and cash equivalents at end of period | $ 118,464 | $ 81,019

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