Notes Payable (Interest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Debt Disclosure [Abstract]
Total interest incurred	$ 11,331	$ 8,156
Less interest - discontinued operations	0	(1,975)
Interest capitalized	(1,590)	(742)
Total interest expense	$ 9,741	$ 5,439