Investment Securities (Details 2) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Unrealized Gains (Losses) on Marketable Investment Securities
Amortized Cost	$ 795,030	$ 608,199
Unrealized Gains	12,143	7,758
Unrealized Losses	(981)	(735)
Estimated Fair Value	806,192	615,222
Corporate bonds
Unrealized Gains (Losses) on Marketable Investment Securities
Amortized Cost	711,651	562,849
Unrealized Gains	481	10
Unrealized Losses	(148)	(623)
Estimated Fair Value	711,984	562,236
Other (including restricted)
Unrealized Gains (Losses) on Marketable Investment Securities
Amortized Cost	40,051	24,495
Unrealized Gains	17	0
Unrealized Losses	0	(30)
Estimated Fair Value	40,068	24,465
Equity securities - strategic
Unrealized Gains (Losses) on Marketable Investment Securities
Amortized Cost	43,328	20,855
Unrealized Gains	11,645	7,748
Unrealized Losses	(833)	(82)
Estimated Fair Value	$ 54,140	$ 28,521

Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale.

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-Publisher FASB
-Name Accounting Standards Codification
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