v3.21.1
Condensed Statements of Cash Flows (Unaudited) - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Cash flows from operating activities:    
Net income $ 199,359,000 $ 133,177,000
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 63,991,000 65,435,000
Loss on disposal of property and equipment 603,000 78,000
Other operating activities, net 6,124,000 4,845,000
Changes in operating assets and liabilities, net 40,231,000 483,000
Net cash provided by operating activities 310,308,000 204,018,000
Cash flows from investing activities:    
Purchase of property and equipment (50,953,000) (52,211,000)
Proceeds from sale of property and equipment 7,656,000 1,543,000
Purchase of short-term investments (89,965,000)  
Proceeds from maturities of short-term investments 110,190,000  
Net cash used in investing activities (23,072,000) (50,668,000)
Cash flows from financing activities:    
Payments for share repurchases (240,215,000) (178,294,000)
Forward contract for accelerated share repurchases (68,750,000)  
Dividends paid (23,232,000) (18,310,000)
Other financing activities, net (4,569,000) (3,345,000)
Net cash used in financing activities (336,766,000) (199,949,000)
Decrease in cash and cash equivalents (49,530,000) (46,599,000)
Cash and cash equivalents at beginning of period 401,430,000 403,571,000
Cash and cash equivalents at end of period $ 351,900,000 $ 356,972,000

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