Leased Property (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Leased Property
Right of use assets - operating	$ 111,176	$ 76,747
Right of use assets - finance	35,677	39,905
Capitalized costs of lessor assets	45,690	41,040
Less: accumulated depreciation	(22,088)	(10,941)
Leased property, net	$ 170,455	$ 146,751