Mezzanine and Stockholders' Equity - Schedule of Stock Options Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Shares
Options outstanding, beginning balance (in shares)	607,346
Options granted (in shares)	11,742
Options exercised (in shares)	(100,000)	(6,000)
Options forfeited (in shares)	(12,228)
Options outstanding, ending balance (in shares)	506,860		607,346
Options exercisable (in shares)	375,960
Weighted Average Exercise Price
Options outstanding, beginning balance (in dollars per share)	$ 9.22
Options granted (in dollars per share)	18.41
Options exercised (in dollars per share)	2.10
Options forfeited (in dollars per share)	17.57
Options outstanding, ending balance (in dollars per share)	10.63		$ 9.22
Options exercisable (in dollars per share)	$ 6.25
Weighted Average Remaining Contractual Term (Years)
Options outstanding	3 years 3 months 22 days		3 years 5 months 1 day
Options exercisable	2 years 1 month 10 days
Aggregate Intrinsic Value (in thousands)
Beginning balance	$ 5,600
Options exercised	1,600
Ending balance	2,000		$ 5,600
Options exercisable	$ 2,000