SCHEDULE II. VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for Doubtful Accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation allowances, beginning balance	$ 22,675	$ 5,631	$ 3,274
Valuation allowances, Charged to Expenses	5,514	16,257	2,549
Valuation allowances, Charged to Other Accounts	(4)	1,399	0
Valuation allowances, Deductions	9,729	612	192
Valuation allowances, ending balance	18,456	22,675	5,631
Valuation Allowance of Deferred Tax Assets
Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation allowances, beginning balance	3,115	3,189	2,413
Valuation allowances, Charged to Expenses	674	0	0
Valuation allowances, Charged to Other Accounts	0	0	776
Valuation allowances, Deductions	231	74	0
Valuation allowances, ending balance	$ 3,558	$ 3,115	$ 3,189