Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Accounts receivable, allowance for doubtful accounts (in dollars)	$ 61,133	$ 46,425
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	700,000,000	700,000,000
Common stock, shares issued	131,282,798	131,233,308
Common stock, shares outstanding	131,282,798	131,233,308
Select
Accounts receivable, allowance for doubtful accounts (in dollars)	$ 61,133	$ 46,425
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares issued	100	100
Common stock, shares outstanding	100	100