Other Current Assets Schedule of Other Current Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Assets, Current [Abstract]
Notes receivable, net of allowances	$ 2,089	$ 3,961
Prepaid expenses	16,568	12,280
Other current assets	2,373	3,081
Total	$ 21,030	$ 19,322