Shareholders' Equity - Share repurchase program (Details) $ in Thousands	12 Months Ended
Dec. 31, 2019 USD ($) shares
Stockholders' Equity Note [Abstract]
Repurchase authorization, number of shares	5,251,892
Shares repurchased, in shares	673,182
Shares repurchased, value \| $	$ 2,787

Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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Period Type:	duration