Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 729,808	$ 109,577
Accounts receivable, net of allowance for doubtful accounts of $2,390 and $2,241, respectively	94,733	94,359
Prepaid expenses and other current assets	13,789	14,927
Prepaid income taxes	5,090	11,857
Deferred income taxes	2,857	2,975
Restricted cash	1,478	1,477
Total current assets	847,755	235,172
Property, plant and equipment:
Land	2,655	2,655
Building and improvements	28,953	28,521
Equipment, furniture, and fixtures	82,715	79,564
Total property and equipment	114,323	110,740
Less: accumulated depreciation	(62,999)	(56,463)
Net property, plant and equipment	51,324	54,277
Deferred income taxes	1,892	1,135
Goodwill	1,558,785	1,573,227
Intangible and other assets, net of accumulated amortization of $458,011 and $416,708, respectively	376,615	421,511
Total assets	2,836,371	2,285,322
Current liabilities:
Current portion of long-term debt (Note 4)	17,224	20,470
Accounts payable	8,659	12,004
Income taxes payable		1,116
Accrued employee compensation and benefits	28,030	53,975
Deferred taxes		110
Other accrued expenses	29,504	30,666
Deferred maintenance and other revenue	67,280	73,254
Total current liabilities	150,697	191,595
Long-term debt, net of current portion (Note 4)	448,382	618,435
Other long-term liabilities	25,086	26,446
Deferred income taxes	94,692	102,176
Total liabilities	$ 718,857	$ 938,652
Commitments and contingencies (Note 5)
Common stock:
Common stock	$ 948	$ 822
Additional paid-in capital	1,704,701	964,845
Accumulated other comprehensive loss	(28,532)	(15,121)
Retained earnings	458,355	414,082
Total common stock	2,135,499	1,364,655
Less: cost of common stock in treasury, 786 shares	(17,985)	(17,985)
Total stockholders' equity	2,117,514	1,346,670
Total liabilities and stockholders' equity	2,836,371	2,285,322
Class A Non-Voting Common Stock [Member]
Common stock:
Common stock	$ 27	$ 27