Net Income (Loss) per Share (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income	$ (3,723)	$ 2,914	$ (67)	$ 5,023
Net income allocated to common shareholders	(3,630)	2,847	$ (67)	4,907
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Less: earnings allocated to RSUs	$ 93	$ (67)		$ (116)

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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