CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current Assets:
Cash and cash equivalents ($160,967 and $65,944 restricted at December 31, 2018 and March 31, 2019, respectively)	$ 233,401	$ 272,308
Accounts receivable, net	779,863	756,059
Short-term investments ($363,840 and $385,571 restricted at December 31, 2018 and March 31, 2019, respectively)	412,732	382,582
Pharmaceutical inventory	47,151	40,818
Other current assets ($43,401 and $45,006 restricted at December 31, 2018 and March 31, 2019, respectively)	99,908	95,400
Total Current Assets	1,573,055	1,547,167
Property and equipment, net	149,520	150,748
Long-term investments ($2,854 and $17,331 restricted at December 31, 2018 and March 31, 2019, respectively)	17,639	3,161
Deferred income taxes	3,581	3,411
Other long-term assets	90,997	24,530
Goodwill	1,018,156	1,018,156
Other intangible assets, net	218,209	231,883
Total Assets	3,071,157	2,979,056
Current Liabilities:
Accounts payable	75,041	72,077
Accrued liabilities	260,954	231,356
Short-term contingent consideration		8,000
Medical claims payable	399,055	393,547
Other medical liabilities	183,802	169,639
Current debt, finance lease and deferred financing obligations	25,006	24,274
Total Current Liabilities	943,858	898,893
Long-term debt, finance lease and deferred financing obligations	722,925	728,608
Deferred income taxes	11,105	11,167
Tax contingencies	16,589	16,478
Long-term contingent consideration	2,268	2,124
Deferred credits and other long-term liabilities	81,022	36,483
Total Liabilities	1,777,767	1,693,753
STOCKHOLDERS' EQUITY
Preferred stock, par value $.01 per share Authorized—10,000 shares at December 31, 2018 and March 31, 2019-Issued and outstanding-none
Common stock, par value $.01 per share Authorized—100,000 shares at December 31, 2018 and March 31, 2019-Issued and outstanding-53,536 and 23,935 shares at December 31, 2018, respectively, and 53,695 and 24,033 shares at March 31, 2019, respectively	537	535
Other Stockholders' Equity:
Additional paid-in capital	1,337,849	1,326,645
Retained earnings	1,419,735	1,419,449
Accumulated other comprehensive loss	(4)	(324)
Treasury stock, at cost, 29,601 and 29,662 shares at December 31, 2018 and March 31, 2019, respectively	(1,464,727)	(1,461,002)
Total Stockholders' Equity	1,293,390	1,285,303
Total Liabilities and Stockholders' Equity	$ 3,071,157	$ 2,979,056