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Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Accounts Receivable - Allowance for Doubtful Accounts [Member] |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Beginning Balance | $ 8,104 | $ 8,281 | $ 11,503
Charged to Costs and Expenses | 950 | 2,517 | 2,561
Divestitures/ Acquisitions | 38 | (1) | 40
Charge Offs | (905) | (1,336) | (803)
Recoveries | (995) | (1,046) | (4,353)
Currency Movement | 574 | (311) | (667)
Ending Balance | 7,766 | 8,104 | 8,281
Inventories - Excess and Obsolete Allowances [Member] |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Beginning Balance | 24,561 | 22,531 | 31,823
Charged to Costs and Expenses | 2,348 | 3,921 | 3,001
Divestitures/ Acquisitions | 2,628 | (706) | 2,755
Charge Offs | (3,219) | 0 | (12,744)
Recoveries | (2,205) | (1,142) | (1,407)
Currency Movement | 1,156 | (43) | (897)
Ending Balance | 25,269 | 24,561 | 22,531
Deferred Income Tax Asset - Valuation Allowance [Member] |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Beginning Balance | 104,771 | 117,071 | 157,317
Charged to Costs and Expenses | 39,307 | 10,782 | 2,840
Divestitures/ Acquisitions | 0 | 616 | (14,425)
Charge Offs | (3,322) | (8,074) | (1,823)
Recoveries | (1,712) | (10,526) | (13,988)
Currency Movement | 12,797 | (5,098) | (12,850)
Ending Balance | $ 151,841 | $ 104,771 | $ 117,071

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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- Definition Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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