Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Ground Lease Obligations

Future minimum lease payments due under the terms of these leases as of December 31, 2018, are as follows (dollars in thousands):

For the Years Ended December 31,	Estimated Minimum Lease Payments Due(1)
2019	$	47
2020	47
2021	47
2022	30
2023	30
Thereafter	31
	$	232

⁽¹⁾  Annual lease payments are set at the beginning of each year to then-current market rates (as determined by the State of Arizona). The amounts shown above represent estimated amounts based on the lease rates currently in place .