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Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination.

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No definition available.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Acquisition (Details) (USD $)	3 Months Ended		0 Months Ended
Acquisition (Details) (USD $)	Mar. 31, 2015	Mar. 31, 2014	Feb. 17, 2015
Business Acquisition [Line Items]
Cash and stock consideration	$ 43,530,000	$ 0
Ahmann & Martin Co. [Member]
Business Acquisition [Line Items]
Cash and stock consideration			48,000,000
Maximum contingent consideration			8,000,000
Goodwill acquired	40,000,000
Other intangible assets, additions during the period			12,000,000
Ahmann & Martin Co. [Member]
Business Acquisition [Line Items]
Other intangible assets, additions during the period	$ 12,000,000