Shareholders' Equity - Summary of Additional Information Related to the Options Outstanding (Details) - 2015 Plan shares in Thousands	12 Months Ended
	Dec. 31, 2019 $ / shares shares
Summary of additional information related to the options outstanding
Exercisable Weighted Average Number of Option Outstanding | shares	675
Average Option Price Per share Exercised	3 years 7 months 6 days
Options Outstanding and Exercisable Weighted Average Exercise Price	$ 1.66
$1.20-$1.25
Summary of additional information related to the options outstanding
Lower range of Exercise prices	1.20
Upper range of Exercise prices	$ 1.25
Exercisable Weighted Average Number of Option Outstanding | shares	214
Average Option Price Per share Exercised	4 years 3 months 18 days
Options Outstanding and Exercisable Weighted Average Exercise Price	$ 1.25
$3.15-$3.35
Summary of additional information related to the options outstanding
Lower range of Exercise prices	3.15
Upper range of Exercise prices	$ 3.35
Exercisable Weighted Average Number of Option Outstanding | shares	25
Average Option Price Per share Exercised	8 years 2 months 12 days
Options Outstanding and Exercisable Weighted Average Exercise Price	$ 3.23
$1.26-$1.38
Summary of additional information related to the options outstanding
Lower range of Exercise prices	1.26
Upper range of Exercise prices	$ 1.38
Exercisable Weighted Average Number of Option Outstanding | shares	200
Average Option Price Per share Exercised	2 years 3 months 18 days
Options Outstanding and Exercisable Weighted Average Exercise Price	$ 1.32
$1.80-$2.25
Summary of additional information related to the options outstanding
Lower range of Exercise prices	1.80
Upper range of Exercise prices	$ 2.25
Exercisable Weighted Average Number of Option Outstanding | shares	236
Average Option Price Per share Exercised	3 years 6 months
Options Outstanding and Exercisable Weighted Average Exercise Price	$ 2.15