CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents ($229,013 and $73,494 restricted at December 31, 2017 and June 30, 2018, respectively)	$ 246,109	$ 398,732
Accounts receivable, net	839,773	660,775
Short-term investments ($219,111 and $341,007 restricted at December 31, 2017 and June 30, 2018, respectively)	412,770	310,578
Pharmaceutical inventory	50,333	40,945
Other current assets ($41,121 and $47,949 restricted at December 31, 2017 and June 30, 2018, respectively)	119,164	72,323
Total Current Assets	1,668,149	1,483,353
Property and equipment, net	160,702	158,638
Long-term investments ($17,287 and $20,478 restricted at December 31, 2017 and June 30, 2018, respectively)	20,478	17,287
Deferred income taxes	1,554	813
Other long-term assets	30,909	22,567
Goodwill	1,014,321	1,006,288
Other intangible assets, net	243,646	268,288
Total Assets	3,139,759	2,957,234
Current Liabilities:
Accounts payable	76,458	74,300
Accrued liabilities	268,258	193,635
Short-term contingent consideration	7,062	6,892
Medical claims payable	397,550	327,625
Other medical liabilities	183,222	177,002
Current debt and capital lease obligations	90,546	112,849
Total Current Liabilities	1,023,096	892,303
Long-term debt and capital lease obligations	734,503	740,888
Deferred income taxes	10,928	12,298
Tax contingencies	15,058	14,226
Long-term contingent consideration	2,058	1,925
Deferred credits and other long-term liabilities	35,346	19,100
Total Liabilities	1,820,989	1,680,740
STOCKHOLDERS' EQUITY
Preferred stock, par value $.01 per share Authorized—10,000 shares at December 31, 2017 and June 30, 2018-Issued and outstanding-none
Ordinary common stock, par value $.01 per share Authorized-100,000 shares at December 31, 2017 and June 30, 2018-Issued and outstanding-52,973 and 24,202 shares at December 31, 2017, respectively, and 53,475 and 24,555 shares at June 30, 2018, respectively	535	530
Other Stockholders' Equity:
Additional paid-in capital	1,311,316	1,274,811
Retained earnings	1,420,271	1,399,495
Accumulated other comprehensive loss	(567)	(380)
Treasury stock, at cost, 28,771 and 28,920 shares at December 31, 2017 and June 30, 2018, respectively	(1,412,785)	(1,397,962)
Total Stockholders' Equity	1,318,770	1,276,494
Total Liabilities and Stockholders' Equity	$ 3,139,759	$ 2,957,234