Derivatives - Narrative (Details) € in Thousands, ₩ in Thousands, ¥ in Thousands, ¥ in Thousands, £ in Thousands, kr in Thousands, kr in Thousands, SFr in Thousands, R$ in Thousands, $ in Thousands, $ in Thousands, $ in Thousands, $ in Thousands, $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($) hedge	Dec. 31, 2018 AUD ($) hedge	Dec. 31, 2018 CNY (¥) hedge	Dec. 31, 2018 DKK (kr) hedge	Dec. 31, 2018 MXN ($) hedge	Dec. 31, 2018 CHF (SFr) hedge	Dec. 31, 2018 KRW (₩) hedge	Dec. 31, 2018 CAD ($) hedge	Dec. 31, 2018 GBP (£) hedge	Dec. 31, 2018 JPY (¥) hedge	Dec. 31, 2018 SGD ($) hedge	Dec. 31, 2018 SEK (kr) hedge	Dec. 31, 2018 EUR (€) hedge	Dec. 31, 2018 HKD ($) hedge	Dec. 31, 2018 BRL (R$) hedge	Dec. 31, 2017 USD ($)	Aug. 05, 2016 USD ($)
Derivative [Line Items]
Deferred taxes used to offset fair value of interest rate swap	$ (2,200)															$ (2,200)
Maturity of derivative contract (up to)	2 years
Revenue and cost of sales
Derivative [Line Items]
Amount expected to be reclassified from accumulated other comprehensive income to earnings in next twelve months, gross	$ 27
Amount expected to be reclassified from accumulated other comprehensive income to earnings in next twelve months, net of tax	20
Interest expense
Derivative [Line Items]
Amount expected to be reclassified from accumulated other comprehensive income to earnings in next twelve months, gross	2,500
Amount expected to be reclassified from accumulated other comprehensive income to earnings in next twelve months, net of tax	1,900
Interest rate swap
Derivative [Line Items]
Notional amount of derivative																	$ 175,000
Fixed rate																	1.12%
Deferred taxes used to offset fair value of interest rate swap	$ (1,500)															$ (1,500)
Foreign currency forward contracts | Designated as hedging instrument
Derivative [Line Items]
Average number of contracts entered into per month | hedge	150	150	150	150	150	150	150	150	150	150	150	150	150	150	150
Foreign currency forward contracts | Not designated as hedging instrument
Derivative [Line Items]
Notional amount of derivative		$ 11,400	¥ 63,200	kr 3,237	$ 23,000	SFr 269	₩ 5,500,000	$ 2,300	£ 2,358	¥ 265,000	$ 8,500	kr 9,627	€ 5,927	$ 11,000	R$ 9,000
Average number of contracts entered into per month | hedge	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20