Summary of Significant Accounting Policies (Schedule of Prior Period Revisions) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other assets	$ 31,852	$ 21,120
Total assets	1,404,035	1,280,615	$ 1,389,042
Notes payable, long-term debt and other obligations, less current portion	1,132,943	856,108
Total liabilities	1,657,307	1,402,776
Total stockholders' equity	(253,272)	(122,161)	$ (20,680)	$ (50,605)
Total liabilities and stockholders' deficiency	$ 1,404,035	1,280,615
As Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other assets		51,261
Total assets		1,310,756
Notes payable, long-term debt and other obligations, less current portion		886,249
Total liabilities		1,432,917
Total stockholders' equity		(122,161)
Total liabilities and stockholders' deficiency		1,310,756
Revision | ASU 2015-03
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other assets		(30,141)
Total assets		(30,141)
Notes payable, long-term debt and other obligations, less current portion		(30,141)
Total liabilities		(30,141)
Total stockholders' equity		0
Total liabilities and stockholders' deficiency		$ (30,141)