Business Combinations

12 Months Ended

Dec. 31, 2015

Business Combinations [Abstract]

Business Combinations

Business Combinations

The Company's Consolidated Financial Statements include the operating results of acquired businesses from the date of each acquisition. Pro forma results of operations for these acquisitions have not been presented as the financial impact to the Company's consolidated results of operations, both individually and in aggregate, is not material. Additional information, if any, existing as of the acquisition dates but unknown to the Company may become known during the remainder of the measurement period, not to exceed 12 months from the acquisition date, which may result in changes to the amounts and allocations recorded.

The Company did not complete any business combinations in 2015 and completed one business combination in 2014 and one business combination in 2013. Cash consideration, including the fair value of vested share-based awards assumed, if any, for acquisitions in 2014 and 2013, was approximately $28.7 million and $10.0 million, respectively.

The following table presents the purchase consideration allocations for these acquisitions based upon acquisition-date fair values, including cash and cash equivalents acquired (in millions):

	2014 Acquisition			2013 Acquisition
Net tangible assets acquired	$	—		$	0.1
Net liabilities acquired	(2.7		)	—
Intangible assets acquired	17.8			9.9
Goodwill	13.6			—
Total	$	28.7		$	10.0

The goodwill recognized for the 2014 acquisition was primarily attributable to expected synergies and was not deductible for U.S. federal income tax purposes.

2014 Acquisition

On January 7, 2014, the Company acquired 100% of the equity securities of WANDL, Inc. ("WANDL"), for $28.7 million of cash and stock consideration. WANDL, a provider of software solutions for advanced planning, management, design and optimization of next-generation multi-layer networks, provides the Company with technology and experience in traffic engineering, multi-layer optimization and path computation to help service provider customers optimize the performance and cost of their networks.

Under the terms of the purchase agreement, the Company assumed unvested share-based awards for employees with a fair value of $34.9 million, which were granted in contemplation of future services and are being expensed as share-based compensation over the remaining service period.

Intangible Assets Acquired

The following table presents details of the Company's intangible assets acquired through the business combination completed during the twelve months endedDecember 31, 2014 (in millions, except years):

	Weighted Average Estimated Useful Life (In Years)	Amount
Existing technology	7	$	10.7
Customer relationships	7	6.0
Trade name	4	0.6
Backlog	1	0.2
Non-compete agreements	2	0.3
Total	7	$	17.8

2013 Acquisition

During 2013, the Company completed a business combination for approximately $10.0 million in cash consideration of which $0.1 million was allocated to net tangible assets acquired and $9.9 million to intangible assets. Intangible assets acquired consisted of existing technology with a weighted-average estimated useful life of five years.