CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Net income/(loss)	$ 3,238	$ (1,782)	$ 4,965	$ 1,081
Other comprehensive income items:
Actuarial gain	19		58
Income tax expense on actuarial gain	(4)		(12)
Other comprehensive income:
Retirement benefits adjustment	15		46
Total comprehensive income (loss)	$ 3,253	$ (1,782)	$ 5,011	$ 1,081