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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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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Goodwill and Identified Intangible Assets Goodwill and Identified Intangible Assets Narrative (Details)	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2014 USD ($) segment	Sep. 26, 2014 segment	Dec. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2015 USD ($) segment	Dec. 31, 2014 USD ($) segment	Dec. 31, 2013 USD ($)
Goodwill [Line Items]
Number of reportable segments \| segment	2	1			2
Intangibles, net	$ 10,599,000		$ 4,097,000	$ 4,097,000	$ 4,097,000	$ 10,599,000
Number of reporting units				2	2	1	1
Goodwill	197,884,000		197,781,000	$ 197,781,000	$ 197,781,000	$ 197,884,000
Goodwill, Impairment Loss			0			0	$ 0
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months			$ 4,097,000	$ 4,097,000	$ 4,097,000
Video [Member]
Goodwill [Line Items]
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount			87.00%	87.00%	87.00%
Goodwill	136,975,000		$ 136,904,000	$ 136,904,000	$ 136,904,000	136,975,000
Cable Edge [Member]
Goodwill [Line Items]
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount			42.00%	42.00%	42.00%
Goodwill	$ 60,909,000		$ 60,877,000	$ 60,877,000	$ 60,877,000	$ 60,909,000