Leased Property (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Leased Property
Right of use assets - operating	$ 198,068	$ 76,747
Right of use assets - finance	41,475	39,905
Capitalized costs of lessor assets	41,465	41,040
Less: accumulated depreciation	(36,268)	(10,941)
Leased property, net	244,740	146,751
Depreciation	$ 8,400	$ 8,400	$ 7,300