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v3.21.1

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Operating activities |  |
Net income | $ 15,662 | $ 450
Adjustments to reconcile net income to net cash used in operating activities: |  |
Amortization expense | 16,795 | 10,295
Depreciation expense | 439 | 198
Stock-based compensation expense | 6,879 | 4,951
Non-cash lease expense | 7 | 18
Non-cash interest expense for amortization of debt discount and issuance costs | 919 | 1,336
Changes in operating assets and liabilities: |  |
Accounts receivable | (9,836) | (12,474)
Inventory | (400) | (6,714)
Prepaid expenses and other assets | (115) | (2,990)
Accounts payable | (1,350) | (108)
Accrued expenses | (8,029) | (15,968)
Accrued rebates, returns and discounts | (401) | 14,337
Net cash provided by (used in) operating activities | 20,570 | (6,669)
Investing activities |  |
Purchase of intangible asset |  | (366,811)
Purchases of property and equipment | (428) | (836)
Net cash used in investing activities | (428) | (367,647)
Financing activities |  |
Proceeds from issuances of common stock from employee stock purchase plans | 358 | 357
Proceeds from the exercise of stock options | 4,182 | 4,454
Payments made for employee stock tax withholdings | (3,508) | (1,358)
Proceeds from issuance of term note, net of issuance costs of $2,200 |  | 192,373
Proceeds from convertible senior notes, net of issuance costs of $4,956 |  | 138,794
Repayment of term notes | (12,500) |
Repayment of term loan |  | (11,500)
Net cash (used in) provided by financing activities | (11,468) | 323,120
Net increase (decrease) in cash, cash equivalents and restricted cash | 8,674 | (51,196)
Cash, cash equivalents and restricted cash at beginning of period | 176,663 | 170,019
Cash, cash equivalents and restricted cash at end of period | 185,337 | 118,823
Reconciliation of cash, cash equivalents and restricted cash to the Consolidated Balance Sheets: |  |
Total cash, cash equivalents and restricted cash | 185,337 | 118,823
Supplemental disclosure of cash flow information |  |
Cash paid for interest | 5,746 | 3,456
Cash paid for income taxes | 418 |
Supplemental disclosure of non-cash activities |  |
Acquisition of property and equipment in accounts payable and accrued expenses | 560 | 392
Asset acquisition transaction costs in accounts payable and accrued expenses |  | 1,415
Accrued royalties discharged upon closing of asset acquisition |  | 1,145
Inventory used in the construction and installation of property and equipment | $ 516 | 394
Term notes issuance costs in accounts payable and accrued expenses |  | 256
Convertible senior notes issuance costs in accounts payable and accrued expenses |  | $ 517

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