Summary of Significant Accounting Policies - Reclassifications and New Accounting Pronouncements (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Cash Provided by (Used in) Operating Activities			$ 76,426	$ 61,760
Net cash provided by (used in) financing activities			287,177	(11,007)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ (142)	$ (15,009)	1,139	(14,500)
Prepaid Expenses and Other Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred financing fees, net	$ 2,000		$ 2,000		$ 2,300
Adjustments for New Accounting Principle, Early Adoption [Member] | Accounting Standards Update 2016-15 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Cash Provided by (Used in) Operating Activities		800		1,973
Net cash provided by (used in) financing activities		(800)		(1,969)
Scenario, Adjustment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest		531		1,062
Scenario, Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest		$ (15,540)		$ (15,562)