Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Acquired Finite-Lived Intangible Assets [Line Items]
Indefinite life trademarks	$ 23,252	$ 32,052
Intangible Assets, Gross (Excluding Goodwill)	65,739	90,839
Accumulated amortization - patents	(7,996)	(21,039)
Total other intangible assets, net	57,743	69,800
Amortization expense for intangible assets	3,256	3,554	$ 854
2018	3,164
2019	3,134
2020	3,108
2021	3,078
2022	3,078
Thereafter	18,929
Finite-Lived Intangible Assets, Net	34,491
Definite-lived trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	2,600	2,600
Patents
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	15,187	31,487
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 24,700	$ 24,700
Minimum | Definite-lived trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	10 years
Minimum | Patents
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	8 years
Minimum | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	10 years
Maximum | Definite-lived trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	15 years
Maximum | Patents
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	24 years
Maximum | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	15 years