CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS)/INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS)/INCOME
Net income	$ 100	$ 2,447
Other comprehensive (loss)/income items:
Actuarial losses	(357)	(390)
Income tax benefit on actuarial losses	74	81
Reclassification adjustment for amortization of net actuarial losses	60	43
Income tax expense on reclassification adjustment	(12)	(9)
Other comprehensive loss:
Retirement benefits adjustment, net of income taxes	(235)	(275)
Total comprehensive (loss)/ income	$ (135)	$ 2,172