Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

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Number of shares of equity interests issued or issuable to acquire entity.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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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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Amount of deferred tax liability attributable to taxable temporary differences due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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-Glossary Investing Activities

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Business Combinations (Details) (USD $)	12 Months Ended			0 Months Ended
Business Combinations (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 19, 2014
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 2,286,000	$ 0	$ 45,765,000
Goodwill	19,978,000us-gaap_Goodwill	16,460,000us-gaap_Goodwill	16,460,000us-gaap_Goodwill
DCML
Business Acquisition [Line Items]
Business Combination, Consideration Transferred				6,200,000
Payments to Acquire Businesses, Gross	2,600,000			3,000,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares				182,408
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable				3,200,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	3,300,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent	1,100,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	500,000
Goodwill	3,500,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 years
Selling, General and Administrative Expenses \| DCML
Business Acquisition [Line Items]
Business Combination, Separately Recognized Transactions, Additional Disclosures, Issuance Costs Not Expensed	$ 100,000