Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Supplemental Cash Flow Information [Abstract]
Income taxes refunded		$ 116,337	$ 3,372	$ 2,426
Loans assumed	$ 225,000
Line of credit assumed	100,000
Loans refinanced	187,500
Line of credit refinanced	140,000
Repayments of debt	$ 2,500	$ 605,620	$ 646,323	$ 679,370