Nature of Business and Summary of Significant Accounting Policies Narrative (Details)	12 Months Ended
	Dec. 31, 2019 USD ($) segment Warrant reporting_unit shares	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jan. 01, 2019 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of segments | segment	1
Number of reporting units | reporting_unit	1
Right of use assets – operating leases	$ 1,746,000	$ 0		$ 1,367,000
Operating lease, liability	2,174,000
Contract assets	1,089,000	485,000
Capitalized Contract Cost, Amortization	1,900,000	1,300,000
Inventory, net	$ 350,000	191,000
Number of warrants issued | Warrant	2
Warrant shares (in shares) | shares	1,239,286
Foreign currency transaction gain (loss), before tax	$ (260,000)	(55,000)	$ (356,000)
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right of use assets – operating leases				1,400,000
Operating lease, liability				$ 1,900,000
Property, Plant and Equipment | Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property and equipment estimated useful lives	1 year
Property, Plant and Equipment | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property and equipment estimated useful lives	7 years
Prepaid Expenses and Other Current Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contract assets	$ 380,000	527,000
Other Noncurrent Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contract with Customer, Asset, Net, Noncurrent	$ 138,000	$ 33,000