Commitments and Contingencies (Details) - USD ($) $ in Thousands		1 Months Ended	3 Months Ended
	Dec. 04, 2014	Apr. 25, 2013	Mar. 31, 2019
Commitments and Contingencies (Textual)
Non-recurring engineering development costs contributed to TI	$ 835	$ 500
Non-recurring engineering costs description	Under the terms of the NN1003 Agreement, we also will reimburse ST Microelectronics a non-recurring engineering fee of $5.00 per each of the first 10,000 units sold. As of March 31, 2019, we had reimbursed for 1,832 units under the NN1003 Agreement.	Under the terms of the NN1002 Agreement, we agreed to pay TI $500,000 of non-recurring engineering costs at the rate of $0.25 per ASIC for each of the first 2 million ASICs sold.	We paid a total of $835,000 of the non-recurring engineering costs and all obligations related to these agreement have thereby been satisfied.