Quarterly Information (Unaudited) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Net revenue		$ 44,993,000	$ 44,248,000	$ 39,472,000	$ 16,557,000	$ 17,579,000	$ 15,724,000	$ 19,650,000
Gross profit	$ 18,703,000	18,715,000	16,966,000	14,602,000	12,830,000	13,340,000	11,099,000	14,514,000	$ 68,986,000	$ 51,783,000
Operating Income (Loss), Total	(5,883,000)	(6,265,000)	(9,391,000)	(10,904,000)	(5,556,000)	(4,928,000)	(6,833,000)	(4,954,000)	(32,443,000)	(22,271,000)
Net income (loss)	$ (6,364,000)	$ (5,968,000)	$ (9,202,000)	$ 1,533,000	$ (6,904,000)	$ (5,977,000)	$ (6,930,000)	$ (5,178,000)	$ (20,001,000)	$ (24,989,000)
Net income (loss) per share - basic	$ (0.17)	$ (0.16)	$ (0.24)	$ 0.04	$ (0.18)	$ (0.16)	$ (0.18)	$ (0.14)	$ (0.53)	$ (0.66)
Net income (loss) per share - diluted	$ (0.17)	$ (0.16)	$ (0.24)	$ 0.04	$ (0.18)	$ (0.16)	$ (0.18)	$ (0.14)	$ (0.53)	$ (0.66)
Business Combination, Step Acquisition, Remeasurement Gain and Gains (Losses) From Other Preexisting Relationships				$ 12.3					$ 12.3