Commitments and Contingencies - Future Minimum Rental Payments (Details) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
2016	$ 778,000
2017	1,038,000
2018	1,038,000
2019	1,038,000
2020	1,038,000
2021 and thereafter	6,754,000
Total	11,684,000
Other Expenses [Abstract]
Operating ground lease expense	$ 256,000	$ 64,000