Summary of Significant Accounting Policies (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Summary of Significant Accounting Policies [Abstract]
Term of warranty	1 year
Period of post customer support service (PCS)	1 year
Cash and Cash Equivalents [Abstract]
Money market accounts	$ 5,400,000	$ 7,500,000
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	1,140,000	1,771,000
Long-term restricted cash	0	1,779,000
Allowance for Doubtful Accounts Receivable [Roll Forward]
Beginning balance	103,000	22,000
Current year provision	0	101,000
Current year write-offs	(86,000)	(20,000)
Ending balance	$ 17,000	103,000
Software Development Costs, net [Abstract]
Software Development Costs Useful Life	3 years
Write down of capitalized software development costs		1,538,000
Development Expenditures [Abstract]
Development Expenditures	$ 1,600,000	3,100,000
Capitalized software development costs	245,000	1,610,000
Foreign Currency Translation [Abstract]
Foreign currency transaction gains (losses)	(69,000)	(34,000)
Product Warranty [Roll Forward]
Beginning balance	1,614,000	1,456,000
Current year provision	355,000	626,000
Current year claims	(467,000)	(455,000)
Currency adjustment	(24,000)	(13,000)
Ending balance	1,478,000	1,614,000
Stock-Based Compensation [Abstract]
Share based compensation expense	1,550,000	541,000
Unrecognized compensation expense	2,200,000
Numerator: [Abstract]
Net income (loss)	$ 1,422,000	$ (4,705,000)
Denominator: [Abstract]
Weighted-average shares outstanding for basic income (loss) per share (in shares)	18,218,681	17,892,891
Effect of dilutive securities [Abstract]
Stock options and restricted stock units (in shares)	293,585	0
Adjusted weighted-average shares outstanding and assumed conversions for diluted income (loss) per share (in shares)	18,512,266	17,892,891
Shares related to dilutive securities excluded because inclusion would be anti-dilutive (in shares)	677,964	2,492,710
Interest-bearing Deposits [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	$ 1,100,000	$ 3,600,000
Long-term restricted cash	1,100,000	1,800,000
Interest Income, Other Domestic Deposits	$ 6,000	$ 10,000
Equipment, Software and Leasehold Improvements, net [Member] | Maximum [Member]
Equipment, software and leasehold improvements, net [Abstract]
Estimated useful life	10 years
Equipment, Software and Leasehold Improvements, net [Member] | Minimum [Member]
Equipment, software and leasehold improvements, net [Abstract]
Estimated useful life	3 years