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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2017 | Sep. 30, 2016
Cash provided by (used for) operating activities: |  |
Net income | $ 6,531 | $ 17,148
Adjustments to reconcile net income to net cash provided by (used for) operating activities: |  |
Depreciation and amortization | 23,202 | 18,994
Provision for doubtful accounts | 167 | 123
Provision for inventory write-downs | 2,189 | 2,398
Deferred income taxes | (953) | 1,413
Tax benefit from exercise of stock options and vested restricted stock | 0 | 2,230
Excess tax benefit from stock-based compensation | 0 | (2,292)
Shares issued for employee benefit plan | 591 | 763
Employee and director stock-based compensation | 9,476 | 7,638
Performance-based common stock warrants | 1,122 | 3,219
Changes in operating assets and liabilities: |  |
Restricted cash | 4,623 | 0
Accounts receivable | (24,440) | (11,359)
Inventories | (21,217) | (4,470)
Prepaid expenses and other assets | (2,422) | (86)
Accounts payable and accrued expenses | 1,488 | 7,699
Accrued income taxes | (1,517) | (4,737)
Net cash provided by (used for) operating activities | (1,160) | 38,681
Cash used for investing activities: |  |
Acquisition of property, plant, and equipment | (29,922) | (28,914)
Acquisition of net assets of Residential Control Systems, Inc. | (8,894) | 0
Acquisition of intangible assets | (1,275) | (1,373)
Increase in restricted cash | 0 | (4,797)
Deposit received toward sale of Guangzhou factory | 0 | 4,797
Deconsolidation of Encore Controls LLC | 0 | 48
Net cash used for investing activities | (40,091) | (30,239)
Cash provided by (used for) financing activities: |  |
Borrowings under line of credit | 115,000 | 92,987
Repayments on line of credit | (50,987) | (107,987)
Proceeds from stock options exercised | 1,107 | 4,813
Treasury stock purchased | (20,217) | (2,188)
Excess tax benefit from stock-based compensation | 0 | 2,292
Net cash provided by (used for) financing activities | 44,903 | (10,083)
Effect of exchange rate changes on cash | (5,703) | (3,184)
Net increase (decrease) in cash and cash equivalents | (2,051) | (4,825)
Cash and cash equivalents at beginning of year | 50,611 | 52,966
Cash and cash equivalents at end of period | 48,560 | 48,141
Supplemental cash flow information: |  |
Income taxes paid | 5,770 | 6,034
Interest paid | $ 1,697 | $ 926

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