UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 3,165	$ 4,572	$ 6,312	$ 9,052
Other comprehensive income/(loss); change in funded status of pension plan
Comprehensive income	$ 3,165	$ 4,572	$ 6,312	$ 9,052

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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