| Dec'19 | Dec'18 | Dec'17 | Dec'16 | Dec'15 | Dec'14 | Dec'13 | Dec'12 | Dec'11 | Dec'10 | Dec'09 |
|---|---|---|---|---|---|---|---|---|---|---|
Cash flows from operating activities: | ||||||||||
Net income (loss) | ||||||||||
25,791 | -18,329 | 19,436 | 75,851 | 48,584 | 8,788 | 55,217 | 86,539 | 91,368 | 50,909 | 9,333 |
Net (income) loss from discontinued operations | ||||||||||
0 | -35,655 | 30,569 | 5,539 | - | - | - | - | - | - | - |
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: | ||||||||||
Depreciation and amortization | ||||||||||
19,406 | 18,851 | 22,529 | 29,932 | 35,850 | 35,590 | 32,854 | 16,775 | 14,735 | 13,439 | 12,360 |
Purchase premium amortization/discount accretion on investments, net | ||||||||||
- | - | - | -167 | 57 | -11 | -1,103 | -2,490 | -986 | -468 | 4 |
Stock-based compensation | ||||||||||
29,137 | 26,461 | 18,969 | 17,141 | 16,825 | 20,014 | 17,462 | 14,372 | 13,762 | 12,201 | 11,024 |
Income tax impact associated with stock option exercises | ||||||||||
- | - | - | - | 2,233 | 481 | -429 | -1,121 | 3,519 | 3,559 | 136 |
Gain on Sale of Investments | ||||||||||
- | - | - | - | - | - | - | 3,126 | 0 | - | - |
Gain on sale of cost method investment | ||||||||||
- | - | - | - | - | - | - | - | - | 0 | - |
Income tax impact associated with stock option exercises | ||||||||||
- | - | - | -2,200 | - | 485 | 767 | 1,552 | 3,672 | 3,470 | 869 |
Gains /charges related to long-term investments | ||||||||||
- | - | - | 0 | - | - | - | - | - | - | - |
Goodwill impairment charges | ||||||||||
- | - | - | - | - | 74,196 | 0 | 0 | - | - | - |
Impairment of long-term investments | ||||||||||
- | - | - | - | - | - | 2,000 | 0 | 0 | - | - |
Deferred income taxes | ||||||||||
-1,379 | 2,459 | 21,119 | 869 | -710 | -20,261 | -7,927 | -2,545 | -4,621 | -8,435 | -4,865 |
Provision for excess and obsolete inventory | ||||||||||
3,900 | 2,900 | 2,900 | - | - | - | - | - | - | - | - |
Other | ||||||||||
-29 | -116 | -46 | - | - | - | - | - | - | - | - |
Changes in assets and liabilities: | ||||||||||
Accounts receivable | ||||||||||
-26,500 | 43,055 | 23,121 | -23,132 | 14,952 | 9,205 | 10,470 | -5,317 | 34,576 | 63,878 | 24,578 |
Inventories | ||||||||||
-4,504 | 85,064 | -34,336 | 12,648 | -9,765 | -1,573 | 46,679 | 10,590 | 30,039 | 36,804 | -21,650 |
Prepaid expenses and other assets | ||||||||||
1,654 | 12,114 | -4,604 | -8,691 | -560 | 7,905 | 4,615 | -2,619 | 7,935 | 3,220 | -103 |
Accounts payable | ||||||||||
-56,614 | 45,503 | -432 | 9,816 | -14,990 | -8,236 | 36,250 | -30,615 | 28,131 | 20,074 | 9,008 |
Accrued employee compensation | ||||||||||
-11,642 | 7,145 | -5,278 | 3,701 | 6,280 | 5,037 | -1,787 | -8,782 | 2,765 | 13,090 | 3,863 |
Other accrued liabilities | ||||||||||
-16,603 | 15,589 | 15,109 | -17,766 | 29,987 | 2,574 | 15,069 | 3,444 | 9,374 | 21,794 | -272 |
Deferred revenue | ||||||||||
-3,354 | 5,759 | 2,440 | -4,560 | -2,496 | 5,188 | -1,211 | -12,680 | 12,555 | 5,432 | 598 |
Income taxes payable | ||||||||||
-4,474 | -16,939 | 18,293 | 3,870 | -1,263 | 2,566 | -26 | -7,744 | -342 | 1,192 | 10,610 |
Net cash used in discontinued operating activities | ||||||||||
0 | -88,152 | -12,823 | -16,636 | - | - | - | - | - | - | - |
Net cash provided by (used in) operating activities | ||||||||||
13,525 | -15,059 | 100,347 | 134,817 | 111,150 | 108,964 | 86,902 | 55,043 | 96,010 | 26,351 | 48,097 |
Cash flows from investing activities: | ||||||||||
Purchases of short-term investments | ||||||||||
1,617 | 81,814 | 136,556 | 144,271 | 110,316 | 145,186 | 153,464 | 369,939 | 228,871 | 185,128 | 89,827 |
Proceeds from maturities of short-term investments | ||||||||||
70,790 | 137,058 | 135,549 | 115,291 | 130,273 | 134,827 | 275,406 | 284,418 | 227,669 | 115,000 | 25,000 |
Purchases of property and equipment | ||||||||||
14,230 | 12,251 | 10,140 | 10,231 | 14,000 | 19,338 | 18,050 | 14,762 | 8,211 | 8,720 | 3,945 |
Purchases of long-term investments | ||||||||||
5,484 | 1,091 | 4,400 | 0 | 0 | - | - | - | - | - | - |
Proceeds from sale of long-term investments | ||||||||||
0 | 624 | 0 | 0 | - | - | - | - | - | - | - |
Loan issued, net of loan repaid | ||||||||||
- | - | - | - | - | - | - | - | - | 102 | - |
Payments for patents | ||||||||||
- | - | - | - | - | - | 275 | 1,400 | 0 | 1,270 | - |
Proceeds from sale of cost method investment | ||||||||||
- | - | - | - | - | - | -3,890 | 0 | 0 | - | - |
Cost method investments | ||||||||||
- | - | - | - | - | - | - | - | - | 3,009 | - |
Payments made in connection with business acquisitions, net of cash acquired | ||||||||||
0 | 14,352 | 0 | 0 | 0 | 1,050 | 147,240 | 28,625 | 37,509 | 12,000 | 3,539 |
Net cash used in discontinued investing activities | ||||||||||
0 | -71,363 | -4,271 | -9,548 | - | - | - | - | - | - | - |
Net cash provided by (used in) investing activities | ||||||||||
49,459 | 28,174 | -15,547 | -39,211 | 5,957 | -30,747 | -39,733 | -130,308 | -46,922 | -95,229 | -72,311 |
Cash flows from financing activities: | ||||||||||
Repurchases of common stock | ||||||||||
75,946 | 30,000 | 113,161 | 38,252 | 117,680 | 93,218 | 63,585 | 850 | 926 | 738 | 282 |
Restricted stock unit withholdings | ||||||||||
6,500 | 8,100 | 6,400 | 4,700 | 2,629 | - | - | - | - | - | - |
Proceeds from exercise of stock options | ||||||||||
5,027 | 6,841 | 9,508 | 28,147 | 40,928 | 9,979 | 7,487 | 12,700 | 29,139 | 18,915 | 1,861 |
Proceeds from issuance of common stock under employee stock purchase plan | ||||||||||
3,617 | 5,554 | 4,764 | 3,892 | 2,985 | 2,762 | 2,139 | 1,997 | 1,752 | 1,202 | 1,129 |
Net cash provided by discontinued financing activities | ||||||||||
0 | 170,247 | 0 | 0 | - | - | - | - | - | - | - |
Excess tax benefit from stock-based compensation | ||||||||||
- | - | - | - | - | 485 | 767 | 1,552 | 3,672 | 3,470 | 869 |
Net cash used in financing activities | ||||||||||
-73,823 | -25,670 | -105,304 | -10,899 | -76,396 | -79,992 | -53,192 | 15,399 | 33,637 | 22,849 | 3,577 |
Net increase (decrease) in cash and cash equivalents | ||||||||||
-10,839 | -1,823 | -37,598 | 58,523 | 40,711 | -1,775 | -6,023 | -59,866 | 82,725 | -46,029 | -20,637 |
Cash paid for income taxes | ||||||||||
8,876 | 23,220 | 32,090 | 35,149 | 40,273 | 38,938 | 45,982 | 52,403 | 34,365 | 44,083 | 14,401 |
Non-cash investing and financing activities: | ||||||||||
Change in accounts payable and other accrued liabilities relating to property and equipment additions | ||||||||||
-4,360 | 2,604 | 638 | - | - | - | - | - | - | - | - |
Additions to property and equipment included in accounts payable and other accrued liabilities | ||||||||||
- | - | - | 744 | - | - | - | - | - | - | - |