Commitments and Contingencies - Future Minimum Rental Payments (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
2016	$ 475,000		$ 475,000
2017	950,000		950,000
2018	950,000		950,000
2019	950,000		950,000
2020	950,000		950,000
2021 and thereafter	5,581,000		5,581,000
Total	9,856,000		9,856,000
Other Expenses [Abstract]
Operating ground lease expense	$ 237,000	$ 156,000	$ 493,000	$ 312,000