Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net (loss) income	$ (158,000)	$ 32,000	$ 134,000
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	320,000	81,000	32,000
Amortization of debt issuance cost and discount	16,000	2,000	0
Equity-based compensation	31,000	20,000	13,000
Excess tax benefit from share-based compensation	(12,000)	(6,000)	(4,000)
Deferred income taxes	(142,000)	(44,000)	8,000
Realized (gain) loss on forward interest rate swaps	(4,000)	5,000	0
All other, net	14,000	4,000	0
Changes in assets and liabilities, net of businesses acquired:
Accounts receivable	2,000	(70,000)	(7,000)
Inventories	(13,000)	(2,000)	3,000
Other assets	(7,000)	(13,000)	0
Accounts payable	(21,000)	62,000	7,000
Accrued liabilities	(5,000)	164,000	6,000
Deferred revenue	16,000	10,000	2,000
Income taxes	47,000	(5,000)	0
Other operating activities	26,000	8,000	0
Net cash provided by operating activities	110,000	248,000	194,000
Cash flows from investing activities:
Acquisition of businesses, net of cash acquired	(52,000)	(3,399,000)	(95,000)
Purchases of property and equipment	(122,000)	(39,000)	(20,000)
Proceeds from the sale of long-term investments	3,000	0	0
Acquisition of intangible assets	0	0	(2,000)
Purchases of long-term investments	(1,000)	(2,000)	(12,000)
Purchases of investments and marketable securities	(1,000)	(651,000)	(410,000)
Maturities of investments and marketable securities	0	336,000	49,000
Proceeds from sales of investments and marketable securities	25,000	644,000	337,000
Net cash used in investing activities	(148,000)	(3,111,000)	(153,000)
Cash flows from financing activities:
Payment of debt issuance costs	0	(24,000)	0
Proceeds from issuance of long-term debt	0	3,189,000	0
Purchase of treasury stock	0	0	(63,000)
Payment of long term-debt	(165,000)	0	0
Proceeds from exercise of stock options and stock purchase plan purchases	17,000	26,000	23,000
Taxes paid related to net share settlement of equity awards	(13,000)	(5,000)	(8,000)
Excess tax benefit from share-based compensation	12,000	6,000	4,000
Net cash (used in) provided by financing activities	(149,000)	3,192,000	(44,000)
Effect of exchange rate changes on cash	(15,000)	2,000	1,000
Net (decrease) increase in cash and cash equivalents	(202,000)	331,000	(2,000)
Cash and cash equivalents at beginning of year	394,000	63,000	65,000
Cash and cash equivalents at end of year	192,000	394,000	63,000
Supplemental disclosures of cash flow information:
Income taxes paid	38,000	17,000	18,000
Interest paid	$ 183,000	$ 0	$ 0