Contingencies (Details) - USD ($) $ in Thousands		3 Months Ended
Apr. 11, 2014	Mar. 31, 2016
Lawsuit Against Sonitrol Corporation
Gain Contingencies [Line Items]
Amount of settlement awarded	$ 2,750
Selling, General and Administrative Expenses
Gain Contingencies [Line Items]
Net gain related to settlement		$ 2,000

Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

Name:	us-gaap_GainLossRelatedToLitigationSettlement
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration