Share-Based Payment Awards - Schedule of Stock Option Activity (Details) - Stock Options - 2012 Plan $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2020 USD ($) $ / shares shares
2012 Plan Stock Options
Outstanding, beginning balance (in shares) \| shares	352,200
Exercised (in shares) \| shares	(7,300)
Outstanding, ending balance (in shares) \| shares	344,900
Vested or expected to vest (in shares) \| shares	344,900
Exercisable (in shares) \| shares	344,900
Weighted- Average Exercise Price
Outstanding, beginning balance (in dollars per share) \| $ / shares	$ 13.95
Exercised (in dollars per share) \| $ / shares	11.38
Outstanding, ending balance (in dollars per share) \| $ / shares	14.00
Vested or expected to vest (in dollars per share) \| $ / shares	14.00
Exercisable (in dollars per share) \| $ / shares	$ 14.00
Weighted- average contractual life
Outstanding	1 year 3 months 18 days
Vested or expected to vest	1 year 3 months 18 days
Exercisable	1 year 3 months 18 days
Aggregate intrinsic value
Outstanding \| $	$ 0
Vested or expected to vest \| $	0
Exercisable \| $	$ 0

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Number of options outstanding, including both vested and non-vested options.

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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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