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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2023 | Jun. 30, 2022
CASH FLOWS FROM OPERATING ACTIVITIES: |  |
Net Income (Loss) | $ 21,668 | $ 102,072
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation | 17,653 | 17,174
Amortization of intangibles | 1,086 | 1,328
Loss on disposal of property and equipment | 22 | 1,034
Stock-based compensation expense | 14,120 | 12,692
Amortization of premium on marketable securities | 419 | 1,867
Deferred income taxes | (2,782) | (3,282)
Increase (decrease) in accounts receivable allowance for credit losses | (454) | 259
Change in operating assets and liabilities: |  |
Accounts receivable | (10,787) | 13,154
Inventories | (14,321) | (11,992)
Prepaid expenses and other assets | (7,241) | 4,075
Accounts payable | 8,813 | 5,577
Taxes payable and accrued liabilities | (5,430) | (2,539)
Net cash provided by operating activities | 22,766 | 141,419
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Purchases of property and equipment | (7,211) | (27,944)
Proceeds from sale of property and equipment | 0 | 1,202
Purchases of marketable securities | (110,810) | (20,710)
Proceeds from sales and maturities of marketable securities | 98,641 | 125,527
Net cash provided by (used in) investing activities | (19,380) | 78,075
CASH FLOWS FROM FINANCING ACTIVITIES: |  |
Issuance of common stock under employee stock plans | 3,098 | 3,057
Repurchase of common stock | (5,999) | (292,349)
Payments of dividends to stockholders | (21,761) | (20,936)
Net cash used in financing activities | (24,662) | (310,228)
NET DECREASE IN CASH AND CASH EQUIVALENTS | (21,276) | (90,734)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD | 105,372 | 158,117
CASH AND CASH EQUIVALENTS AT END OF PERIOD | 84,096 | 67,383
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES: |  |
Unpaid property and equipment | 2,713 | 2,984
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION: |  |
Cash paid for income taxes, net | $ 11,653 | $ 14,657

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