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Equity Compensation Plans - Summary of stock option activity (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2020
Summary Of Stock Option Activity [Abstract]
Cash received from options exercised	$ 32
Stock based compensation	$ 573	$ 729
2014 Plan
Summary Of Stock Option Activity [Abstract]
Number of shares authorized	600,000
Number of shares issuable		341,985

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Amount of cash inflow from exercise of option under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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