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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Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

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Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

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Goodwill and Intangible Assets - Narrative (Details) (USD $)	12 Months Ended			3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2014	Sep. 30, 2013
Finite-Lived Intangible Assets [Line Items]
Accumulated impairment loss	$ 8,300,000
Aggregate amortization expense	14,900,000us-gaap_AmortizationOfIntangibleAssets	14,200,000us-gaap_AmortizationOfIntangibleAssets	7,500,000us-gaap_AmortizationOfIntangibleAssets
Intangible asset impairment charges	1,102,000	8,089,000	0
Ostial Solutions, LLC
Finite-Lived Intangible Assets [Line Items]
Intangible asset impairment charges				1,100,000	8,100,000
Contingent consideration benefit				$ 874,000	$ 3,800,000