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Condensed consolidating guarantor financial information - Cash Flows (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2019 | Apr. 01, 2018
Condensed Cash Flow Statements, Captions [Line Items] |  |
Net cash (used in) provided by operating activities from continuing operations | $ 60,166 | $ 86,848
Cash flows from investing activities of continuing operations: |  |
Expenditures for property, plant and equipment | (23,494) | (15,747)
Proceeds from sale of assets and investments | 991 | 0
Payments for businesses and intangibles acquired, net of cash acquired | (1,025) | (3,684)
Net cash used in investing activities from continuing operations | (23,528) | (19,431)
Cash flows from financing activities of continuing operations: |  |
Net proceeds from share based compensation plans and the related tax impacts | 2,242 | 1,400
Payments for contingent consideration | (110,953) | (91)
Dividends paid | (15,650) | (15,447)
Intercompany transactions | 0 | 0
Intercompany dividends paid | 0 |
Reduction in borrowings | 0 | (18,500)
Debt extinguishment, issuance and amendment fees | 0 | (74)
Net cash provided by (used in) financing activities from continuing operations | (124,361) | (32,712)
Cash flows from discontinued operations: |  |
Net cash used in operating activities | 3,610 | (206)
Net cash used in discontinued operations | 3,610 | (206)
Effect of exchange rate changes on cash and cash equivalents | (1,836) | 10,815
Net (decrease) increase in cash and cash equivalents | (85,949) | 45,314
Cash and cash equivalents at the beginning of the period | 357,161 | 333,558
Cash and cash equivalents at the end of the period | 271,212 | 378,872
Eliminations |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |
Net cash (used in) provided by operating activities from continuing operations | (92,455) |
Cash flows from investing activities of continuing operations: |  |
Expenditures for property, plant and equipment | 0 |
Proceeds from sale of assets and investments | (2,362) |
Payments for businesses and intangibles acquired, net of cash acquired | 0 |
Net cash used in investing activities from continuing operations | (2,362) |
Cash flows from financing activities of continuing operations: |  |
Net proceeds from share based compensation plans and the related tax impacts | 0 |
Payments for contingent consideration | 0 |
Dividends paid | 0 |
Intercompany transactions | 2,362 |
Intercompany dividends paid | 92,455 |
Net cash provided by (used in) financing activities from continuing operations | 94,817 |
Cash flows from discontinued operations: |  |
Net cash used in operating activities | 0 |
Net cash used in discontinued operations | 0 |
Effect of exchange rate changes on cash and cash equivalents | 0 |
Net (decrease) increase in cash and cash equivalents | 0 |
Cash and cash equivalents at the beginning of the period | 0 |
Cash and cash equivalents at the end of the period | 0 |
Parent Company |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |
Net cash (used in) provided by operating activities from continuing operations | (417) | (108,377)
Cash flows from investing activities of continuing operations: |  |
Expenditures for property, plant and equipment | (222) | (159)
Proceeds from sale of assets and investments | 2,362 |
Payments for businesses and intangibles acquired, net of cash acquired | 0 | 0
Net cash used in investing activities from continuing operations | 2,140 | (159)
Cash flows from financing activities of continuing operations: |  |
Net proceeds from share based compensation plans and the related tax impacts | 2,242 | 1,400
Payments for contingent consideration | 0 | 0
Dividends paid | (15,650) | (15,447)
Intercompany transactions | (2,426) | 131,967
Intercompany dividends paid | 0 |
Reduction in borrowings |  | (18,500)
Debt extinguishment, issuance and amendment fees |  | (74)
Net cash provided by (used in) financing activities from continuing operations | (15,834) | 99,346
Cash flows from discontinued operations: |  |
Net cash used in operating activities | 3,610 | (206)
Net cash used in discontinued operations | 3,610 | (206)
Effect of exchange rate changes on cash and cash equivalents | 0 | 0
Net (decrease) increase in cash and cash equivalents | (10,501) | (9,396)
Cash and cash equivalents at the beginning of the period | 49,523 | 37,803
Cash and cash equivalents at the end of the period | 39,022 | 28,407
Guarantor Subsidiaries |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |
Net cash (used in) provided by operating activities from continuing operations | 57,823 | 134,198
Cash flows from investing activities of continuing operations: |  |
Expenditures for property, plant and equipment | (17,784) | (5,015)
Proceeds from sale of assets and investments | 991 |
Payments for businesses and intangibles acquired, net of cash acquired | (1,025) | 0
Net cash used in investing activities from continuing operations | (17,818) | (5,015)
Cash flows from financing activities of continuing operations: |  |
Net proceeds from share based compensation plans and the related tax impacts | 0 | 0
Payments for contingent consideration | (81,977) | (91)
Dividends paid | 0 | 0
Intercompany transactions | 40,837 | (127,825)
Intercompany dividends paid | 0 |
Reduction in borrowings |  | 0
Debt extinguishment, issuance and amendment fees |  | 0
Net cash provided by (used in) financing activities from continuing operations | (41,140) | (127,916)
Cash flows from discontinued operations: |  |
Net cash used in operating activities | 0 | 0
Net cash used in discontinued operations | 0 | 0
Effect of exchange rate changes on cash and cash equivalents | 0 | 0
Net (decrease) increase in cash and cash equivalents | (1,135) | 1,267
Cash and cash equivalents at the beginning of the period | 1,757 | 8,933
Cash and cash equivalents at the end of the period | 622 | 10,200
Non-Guarantor Subsidiaries |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |
Net cash (used in) provided by operating activities from continuing operations | 95,215 | 61,027
Cash flows from investing activities of continuing operations: |  |
Expenditures for property, plant and equipment | (5,488) | (10,573)
Proceeds from sale of assets and investments | 0 |
Payments for businesses and intangibles acquired, net of cash acquired | 0 | (3,684)
Net cash used in investing activities from continuing operations | (5,488) | (14,257)
Cash flows from financing activities of continuing operations: |  |
Net proceeds from share based compensation plans and the related tax impacts | 0 | 0
Payments for contingent consideration | (28,976) | 0
Dividends paid | 0 | 0
Intercompany transactions | (40,773) | (4,142)
Intercompany dividends paid | (92,455) |
Reduction in borrowings |  | 0
Debt extinguishment, issuance and amendment fees |  | 0
Net cash provided by (used in) financing activities from continuing operations | (162,204) | (4,142)
Cash flows from discontinued operations: |  |
Net cash used in operating activities | 0 | 0
Net cash used in discontinued operations | 0 | 0
Effect of exchange rate changes on cash and cash equivalents | (1,836) | 10,815
Net (decrease) increase in cash and cash equivalents | (74,313) | 53,443
Cash and cash equivalents at the beginning of the period | 305,881 | 286,822
Cash and cash equivalents at the end of the period | $ 231,568 | $ 340,265

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