CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 103,303	$ 167,915
Accounts receivable, net of allowance for doubtful accounts of $4,207 and $4,096, respectively	218,561	260,518
Prepaid and other	53,219	52,599
Total current assets	375,083	481,032
Goodwill	365,201	496,499
Property and equipment, net	111,391	110,143
Intangibles, net	25,160	27,874
Investment in unconsolidated affiliates	22,788	21,566
Other assets	36,723	17,818
Total assets	936,346	1,154,932
Current liabilities:
Accounts payable, accrued expenses and other	107,755	137,069
Deferred revenue	239,290	279,815
Current portion of long-term debt, net	10,800	9,773
Total current liabilities	357,845	426,657
Long-term income taxes payable	36,507	36,348
Long-term debt, net, less current portion	172,491	184,499
Other long-term liabilities	13,719	26,022
Total liabilities	580,562	673,526
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $.001 par value, authorized 800 shares; issued and outstanding: none	0	0
Common stock	148	147
Additional paid-in capital	2,026,916	2,026,268
Accumulated deficit	(902,862)	(780,548)
Accumulated other comprehensive income	1,008	1,926
Less: Treasury stock, at cost, 58,816 and 57,750 shares, respectively	(769,426)	(766,387)
Total stockholders' equity	355,784	481,406
Total liabilities and stockholders’ equity	936,346	1,154,932
Common Class B
Stockholders’ equity:
Common stock	$ 0	$ 0