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11. Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Other Significant Noncash Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net Income (Loss) Attributable to Parent | $ 82,700 | $ 22,100 | $ 5,000 | $ 12,400 | $ (18,700) | $ 17,100 | $ 16,600 | $ 11,000 | $ 122,249 | $ 26,000 | $ 109,239
Depreciation and amortization |  |  |  |  |  |  |  |  | 148,700 | 142,900 | 131,800
Share-based compensation |  |  |  |  |  |  |  |  | 23,400 | 19,700 | 17,000
Loss (gain) on disposition of securities |  |  |  |  |  |  |  |  | (100) | (800) | (1,600)
Other than Temporary Impairment Losses, Investments |  |  |  |  |  |  |  |  | 7,000 | 600 | 600
Loss on disposition of fixed assets |  |  |  |  |  |  |  |  | 8,100 | 600 | 300
Excess tax benefits from share-based compensation |  |  |  |  |  |  |  |  | 0 | (1,506) | (3,610)
Changes in fair value of contingent consideration |  |  |  |  |  |  |  |  | (18,100) | (400) | (5,600)
(Increase) decrease in accounts receivable, net |  |  |  |  |  |  |  |  | (64,100) | 12,500 | (39,000)
Increase in inventories, net |  |  |  |  |  |  |  |  | (47,700) | (57,100) | (54,200)
(Increase) decrease in Other Current Assets |  |  |  |  |  |  |  |  | (36,100) | (6,600) | 100
Increase in accounts payable and other current liabilities |  |  |  |  |  |  |  |  | 7,800 | 30,100 | 28,600
(Decrease) increase in Income Taxes Payable |  |  |  |  |  |  |  |  | (22,400) | 10,700 | 12,700
Decrease in deferred income taxes |  |  |  |  |  |  |  |  | (82,000) | (51,400) | (4,000)
Other |  |  |  |  |  |  |  |  | 5,200 | 5,700 | 4,300
Decrease in other long term assets |  |  |  |  |  |  |  |  | 2,400 | 12,700 | 300
Increase (Decrease) in Other Long Term Liabilities |  |  |  |  |  |  |  |  | 38,100 | 10,400 | (10,700)
Impairment losses on goodwill and long-lived assets |  |  |  |  |  |  |  |  | 11,506 | 62,305 | 0
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 103,885 | 216,433 | 186,210
Noncash or Part Noncash Acquisition, Fixed Assets Acquired |  |  |  |  |  |  |  |  | 0 | 7,200 | 0
Noncash Purchased Marketable Securities and Investments |  |  |  |  |  |  |  |  | $ 2,800 | $ 600 | $ 2,200

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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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- Definition Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479 + Details
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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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