Accruals and Other Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Accrued and Other Liabilities [Abstract]
Net Income (Loss) Attributable to Noncontrolling Interest	$ 2,214	$ 1,254	$ 3,097	$ 2,113	$ 5,218
Payments to Noncontrolling Interests			3,840	5,413	7,772
Beginning balance	3,475		4,154	$ 5,473	5,473
Other			64		1,235
Ending balance	$ 3,475		$ 3,475		$ 4,154