Financial Instruments and Fair Value Measurements - Effective of derivative instruments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Gain (loss) of derivative instruments
Amount of gain (loss) recognized in other comprehensive income (loss) on derivatives	$ 1,061	$ (1,657)	$ (336)
Amount expected to be reclassified during next twelve months	$ 600
Period over which losses are expected to be reclassified	12 months
Interest expense
Gain (loss) of derivative instruments
Amount of loss reclassified into consolidated statements of income	$ 247
Equity in loss from unconsolidated joint ventures
Gain (loss) of derivative instruments
Amount of loss reclassified into consolidated statements of income	$ 173