The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

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The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value.

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Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets		$ 5,800	$ 7,400	$ 6,900
Intangible asset impairment charges	$ 200	202	2,710	0
Intangible asset impairment charges		$ 202	2,710	$ 0
North America
Finite-Lived Intangible Assets [Line Items]
Intangible asset impairment charges			2,400
EMEA
Finite-Lived Intangible Assets [Line Items]
Intangible asset impairment charges			$ 300