Business Acquisitions Business Acquisitions (Tables) - DVTEL [Member]

12 Months Ended

Dec. 31, 2015

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

The preliminary allocation of the purchase price for DVTEL is as follows (in thousands):



Cash acquired	$	5,232
Other tangible assets and liabilities, net	5,160
Net deferred taxes	1,727
Identifiable intangible assets	27,380
Goodwill	57,992
Total purchase price	$	97,492

The allocation of the purchase price related to this acquisition is preliminary and is based on management’s judgments after evaluating several factors, including preliminary valuation assessments of tangible and intangible assets, and preliminary estimates of the fair value of liabilities assumed. The primary areas of the preliminary purchase price allocation that are not yet finalized relate to the valuation of the identifiable intangible assets, property and equipment, income taxes (including uncertain tax positions) and certain other tangible assets and liabilities. The final allocation of the purchase price to the assets acquired and liabilities assumed will be completed when the final valuation assessments of tangible and intangible assets are completed and estimates of the fair value of liabilities assumed are finalized during the year ended December 31, 2016. The preliminary goodwill of $58.0 million represents future economic benefits expected to arise from synergies from combining operations and the ability of DVTEL to provide the Company domain knowledge and distribution channels in adjacent security markets.

The Company made an election under Section 338 of the Internal Revenue Code of 1986, as amended, which resulted in tax-deductible goodwill related to the acquisition of DVTEL. The Company estimates that the tax-deductible goodwill and intangibles resulting from the election will be approximately $24.8 million, to be amortized for United States tax purposes over a 15 year period. The value of tax-deductible goodwill and intangibles differs from the amounts listed in the preliminary purchase price allocation above as the impact of the elections made under Section 338 only affects United States income taxes for the goodwill and intangibles that are owned by the Company's United States subsidiaries.

Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]

The following table presents the acquired intangible assets, their preliminary estimated fair values, and preliminary estimated useful lives (in thousands, except years):



	Estimated Useful Life	Amount
Developed technology	7.5 years	$	21,500
Customer relationships	10.0 years	3,800
In-process research and development	indefinite	1,700
Other	1.0 year	380
		$	27,380