The Company and Summary of Significant Accounting Policies (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended												12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2013 Channel Segment	Dec. 31, 2012	Dec. 31, 2011
Business Acquisition [Line Items]
Effective date of merger													Dec. 13, 2011
Number of operating segments													3
Cash and Cash Equivalents [Abstract]
Short term investment maturity period													3 months
Accounts Receivable [Abstract]
Accounts receivable minimum maturity period													30 days
Accounts Receivable maximum maturity period													90 days
Property and Equipment [Abstract]
Estimated useful life													5 years
Other Intangible Assets [Abstract]
Other intangible assets useful lives													10 years
Activity in warranty accrual [Roll Forward]
Accrual at beginning of year				$ 1,440				$ 1,661					$ 1,440	$ 1,661
Additions charged to warranty expense													1,206	1,497
Expiring warranties													(410)	(442)
Claims satisfied													(1,085)	(1,276)
Total	1,151				1,440				1,661				1,151	1,440	1,661
Less: current portion	(1,094)				(1,274)								(1,094)	(1,274)
Long term accrued warranty	57				166								57	166
Liability for Employee Rights Upon Retirement [Abstract]
Number of monthly salary eligible by employee for each year of service as severance pay													1 month
Severance expenses													201	179	185
Revenue Recognition [Abstract]
Number of distribution channels													2
Period of sales deferred													14 days
Advertising Costs [Abstract]
Advertising expenses													71,992	60,651	32,303
Derivatives [Abstract]
Balance of derivative instruments	255				402								255	402
Amount recognized as financing income													699	289
Notional amounts of foreign currency derivatives	6,725				8,400								6,725	8,400
Income Taxes [Abstract]
Income tax benefit percentage realized on examination (in hundredths)													50.00%
Weighted average number of common and common equivalent shares outstanding [Abstract]
Basic number of common shares outstanding (in shares)	19,400,341	19,982,967	20,573,048	20,678,023	20,947,985	21,205,675	20,547,244	18,339,977	13,509,866	12,341,723	10,256,364	10,256,364	20,454,970	20,355,520	11,602,049
Dilutive effect of stock options and warrants (in shares)													202,270	408,834	0
Diluted number of common and common stock equivalent shares outstanding (in shares)	19,602,611	20,441,262	21,033,349	21,147,583	21,356,819	21,752,845	21,034,814	18,876,163	13,509,866	13,182,818	10,256,364	11,819,587	20,657,240	20,764,354	11,602,049
Common stock options and warrants excluded from computation of diluted earnings per share (in shares)													2,172,745	1,920,442	1,791,788
Impairment of Long-Lived Assets and Intangibles [Abstract]
Asset impairment													$ 0
Core technology [Member]
Finite-Lived Intangible Assets [Line Items]
Patent costs and licensed technologies useful life													10 years
Product technology [Member]
Finite-Lived Intangible Assets [Line Items]
Patent costs and licensed technologies useful life													5 years
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Patent costs and licensed technologies useful life													8 years
Warranty on Product Sales [Line Items]
Period of warranty on product sales													1 year
Extended period of warranty on domestic sale of laser equipment													3 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Patent costs and licensed technologies useful life													12 years
Warranty on Product Sales [Line Items]
Period of warranty on product sales													2 years
Extended period of warranty on domestic sale of laser equipment													4 years
Computer Equipment [Member] | Minimum [Member]
Property and Equipment [Abstract]
Estimated useful life													3 years
Computer Equipment [Member] | Maximum [Member]
Property and Equipment [Abstract]
Estimated useful life													7 years
Minimum [Member]
Short-term Deposits [Abstract]
Short-term deposits maturity period													3 months
Maximum [Member]
Short-term Deposits [Abstract]
Short-term deposits maturity period													1 year
PhotoMedex, Inc. [Member]
Business Acquisition [Line Items]
Percentage of ownership on reverse merger (in hundredths)													20.00%
LK Technology [Member]
Business Acquisition [Line Items]
Effective date of merger													Jul. 01, 2013
Percentage of shares acquired by wholly-owned subsidiary (in hundredths)	100.00%												100.00%
Radiancy, Inc. [Member]
Business Acquisition [Line Items]
Percentage of ownership on reverse merger (in hundredths)													80.00%