Acquisitions (Details) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
	Aug. 15, 2014	Dec. 31, 2015	Sep. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Business Combination, Contingent Consideration, Liability		$ 318	$ 925	$ 318	$ 968
Assets acquired and liabilities assumed
Goodwill		0		0	5,936	$ 8,390
Decrease in contingent consideration		577		650	(43)	$ 0
Developed Technology Rights [Member]
Assets acquired and liabilities assumed
Identifiable intangible assets		800		800
Customer Relationships [Member]
Business Acquisition [Line Items]
Finite lived intangible asset, useful life range, Low value			6 years 6 months
Fair value inputs, discount range, low end of range			21.00%
Fair value inputs, discount range, high end of range			22.00%
Assets acquired and liabilities assumed
Identifiable intangible assets		500		500
Trade Names [Member]
Assets acquired and liabilities assumed
Identifiable intangible assets		200		$ 200
Lumewave, Inc. [Member]
Business Acquisition [Line Items]
Effective Date of Acquisition				Aug. 15, 2014
Percentage of Voting Interests Acquired	100.00%
Name of Acquired Entity				Lumewave, Inc.
Payments to Acquire Businesses, Gross	$ 1,800
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	715
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	1,300
Business Combination, Contingent Consideration, Liability		$ 318	$ 925	$ 318	$ 968
Business Acquisition, Working Capital Adjustment to Consideration Transferrred	225
Assets acquired and liabilities assumed
Cash and cash equivalents	630
Accounts receivable	107
Inventory	31
Other current assets	259
Property and equipment	23
Identifiable intangible assets	1,500
Goodwill	1,257
Accounts payable	(352)
Accrued liabilities	(255)
Total assets acquired and liabilities assumed, net	$ 3,200