Financial Instruments and Fair Value Measurements - Effect of derivative instruments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Gain (loss) of derivative instruments
Amount of net gain recognized in other comprehensive income on derivatives	$ 664	$ 1,734	$ 1,182	$ 5,155
Amount expected to be reclassified during next twelve months			$ 1,900
Period over which losses are expected to be reclassified			12 months
Interest expense
Gain (loss) of derivative instruments
Amount of net (gain) loss reclassified into consolidated statements of income	(428)		$ (1,166)	52
Equity in loss from unconsolidated joint ventures
Gain (loss) of derivative instruments
Amount of net (gain) loss reclassified into consolidated statements of income	$ (45)	$ 15	$ (115)	$ 98