| Dec'14 | Dec'13 | Dec'12 | Dec'11 | Dec'10 | Dec'09 | |
|---|---|---|---|---|---|---|
Operating activities | ||||||
Net income (loss) | ||||||
-43,610 | -12,453 | 5,939 | 1,102 | -6,774 | -12,855 | |
Adjustments to reconcile net income (loss) to net cash provided by operating activities: | ||||||
Depreciation and amortization | ||||||
35,624 | 23,254 | 12,773 | 7,190 | 5,262 | 6,407 | |
Share-based compensation expense | ||||||
34,085 | 23,436 | 6,611 | 1,945 | 1,715 | 1,651 | |
Release of valuation allowance on certain deferred tax assets | ||||||
- | 4,111 | - | 0 | - | - | |
Loss on disposal of property and equipment | ||||||
-505 | -910 | -353 | -157 | -161 | -44 | |
Facility exit charge | ||||||
- | - | - | 1,737 | 0 | - | |
Bad debt expense | ||||||
2,529 | 1,907 | 1,227 | 594 | 240 | 10 | |
Deferred rent | ||||||
-4,415 | -400 | -5,469 | 1,243 | 266 | -246 | |
Amortization of bond premium | ||||||
3,506 | 624 | 751 | -181 | 5 | 15 | |
Impairment of certain acquired intangible assets | ||||||
3,259 | - | - | - | - | - | |
Changes in operating assets and liabilities: | ||||||
Accounts receivable | ||||||
5,979 | 7,571 | 3,458 | 2,208 | 1,356 | 607 | |
Prepaid expenses and other assets | ||||||
5,084 | 1,543 | -650 | 2,882 | 69 | -308 | |
Accounts payable | ||||||
4,634 | 1,497 | 991 | 916 | 327 | 59 | |
Accrued expenses | ||||||
8,577 | 1,038 | 1,776 | 2,460 | 546 | 385 | |
Deferred revenue | ||||||
3,058 | 3,910 | 2,530 | 2,391 | 2,477 | 642 | |
Net cash provided by operating activities | ||||||
45,519 | 31,298 | 35,612 | 14,826 | 2,258 | -4,217 | |
Investing activities | ||||||
Proceeds from investment maturities | ||||||
174,949 | 53,000 | 28,434 | - | - | - | |
Proceeds from maturities of investments | ||||||
- | - | - | 4,750 | 17,578 | 13,050 | |
Purchases of investments | ||||||
272,644 | 236,147 | 38,397 | 47,772 | 7,421 | 23,467 | |
Purchases of property and equipment | ||||||
32,595 | 22,047 | 15,991 | 7,686 | 4,896 | 3,622 | |
Purchases of intangible assets | ||||||
11,647 | 3,925 | 4,073 | 1,135 | 630 | 455 | |
Acquisitions, net of cash acquired of $2,879 in 2012 | ||||||
3,500 | 42,708 | 67,645 | 6,540 | - | - | |
Net cash used in investing activities | ||||||
-145,437 | -251,827 | -97,672 | -58,383 | 4,631 | -14,494 | |
Financing activities | ||||||
Proceeds from exercise of Class A common stock options | ||||||
23,923 | 18,350 | 7,448 | 2,917 | 950 | 100 | |
Proceeds from public offering, net of offering costs | ||||||
- | 253,899 | 156,726 | 70,788 | - | - | |
Net cash provided by financing activities | ||||||
23,923 | 272,249 | 164,174 | 79,205 | 950 | 100 | |
Proceeds from concurrent private placement | ||||||
- | - | - | 5,500 | - | - | |
Net increase (decrease) in cash and cash equivalents during period | ||||||
-75,995 | 51,720 | 102,114 | 35,648 | 7,839 | -18,611 | |
Supplemental disclosures of cash flow information | ||||||
Noncash transactions: | ||||||
Capitalized share-based compensation | ||||||
6,585 | 3,817 | 2,379 | 600 | 431 | 390 | |
Write-off of fully depreciated property and equipment | ||||||
4,749 | 3,697 | 2,986 | 2,133 | - | - | |
Class A common stock issued in connection with an acquisition | ||||||
- | - | - | 910 | - | - | |