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Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES: |  |  |
Net Income | $ 101,035 | $ 28,793 | $ 68,644
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation and amortization | 76,916 | 74,735 | 66,569
Operatingleaserightofuseassetamortization | 8,294 | 0 | 0
Provision for doubtful accounts | 14,882 | 781 | 2,308
Provision for warranty and returns | (134) | 5,353 | 845
Stock compensation | 21,918 | 24,241 | 19,352
Loss (gain) on disposal of property and equipment | 12,872 | 8,867 | 3,778
Productrationalization | 0 | 12,696 | 0
Impairment of Intangible Assets, Finite-lived | 0 | 5,000 | 0
Bond premium amortization | 135 | 342 | 103
Debt issuance cost amortization | 288 | 288 | 48
Impairment of assets held for sale | 0 | 269 |
Impairment of assets held for sale |  |  | 0
Bargain Purchase Gain | 0 | 0 | (70,890)
Change in fair value of contingent earn-out | (47,400) | 20,400 | 8,000
Sparepartsusage | 24,301 | 7,310 | 4,820
Other | 447 | 3,856 | (220)
Changes in operating assets and liabilities |  |  |
Accounts receivable | (23,684) | (76,742) | (54,533)
Inventories | (24,997) | (21,770) | 181,699
Prepaid expenses and other assets | 8,588 | 3,719 | (29,652)
Increase (Decrease) in Due from Related Parties, Current | 0 | 97,443 | (95,309)
Increase (Decrease) in Other Operating Assets | (29,837) | (9,086) | (6,975)
Accounts payable | (2,697) | 23,270 | 46,648
Accrued liabilities | (43,689) | (29,553) | 33,813
Income taxes, including excess tax benefits and deferred income taxes | 4,680 | (19,997) | (24,625)
Net cash provided by operating activities | 101,918 | 160,215 | 154,423
CASH FLOWS FROM INVESTING ACTIVITIES: |  |  |
Purchases of property and equipment | (97,312) | (92,720) | (74,479)
Proceeds from sale of assets | 33 | 765 | 2
Proceeds from the disposal of assets held for sale | 0 | 13,000 | 0
Intangible asset additions | (8,728) | (8,059) | (5,203)
Business acquisitions, net of cash acquired | (76,133) | (1,300) | (162,448)
Purchases of investment securities | (26,040) | (30,496) | (24,743)
Proceeds from sale of investment securities | 41,292 | 15,440 | 0
Net cash (used in) provided by investing activities | (166,888) | (103,370) | (266,871)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |  |
Repayments of Long-term obligations | 0 | 0 | (75,000)
Proceeds from exercise of stock options | 7,732 | 14,275 | 32,003
Proceeds from employee stock purchase plan | 0 | 0 | 2,705
Purchase of treasury stock | (18,639) | (6,252) | (4,057)
Net cash (used in) provided by financing activities | (10,907) | 8,023 | (44,349)
Effect of exchange rate changes on cash | (234) | (10,159) | 1,787
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS | (76,111) | 54,709 | (155,010)
CASH AND CASH EQUIVALENTS, beginning of period | 344,781 | 290,072 | 445,082
CASH AND CASH EQUIVALENTS, end of period | 268,670 | 344,781 | 290,072
SUPPLEMENTAL DISCLSOURE OF CASH FLOW INFORMATION |  |  |
Cash paid during the year for income taxes | 9,675 | 12,598 | 5,109
Interest Paid, Excluding Capitalized Interest, Operating Activities | 549 | 709 | 2,047
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING ACTIVITIES |  |  |
Accounts payable for property and equipment | 13,912 | 26,522 | 5,376
Fair value of assets acquired | 91,019 |  | 886,569
Cash paid for acquisitions, net of cash acquired | (76,133) |  | (162,448)
Proceeds from Issuance of Debt |  |  | (75,000)
Estimated working capital adjustment | 0 |  | 4,253
Contingent consideration | (17,300) |  | (19,000)
Issuance of common stock for acquisitions | 0 |  | (413,139)
Bargain Purchase Gain | 0 | 0 | (70,890)
Goodwill, Acquired During Period | 20,026 | $ 1,300 | 6,536
Liabilities Assumed | $ (17,612) |  | (156,881)
Hospira [Member] |  |  |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Bargain Purchase Gain |  |  | (70,890)
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING ACTIVITIES |  |  |
Proceeds from Issuance of Debt |  |  | (75,000)
Contingent consideration |  |  | (19,000)
Issuance of common stock for acquisitions |  |  | (413,139)
Bargain Purchase Gain |  |  | $ (70,890)

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