CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current Assets:
Cash and cash equivalents ($81,776 and $229,013 restricted at December 31, 2016 and December 31, 2017, respectively)	$ 398,732	$ 304,508
Accounts receivable, less allowance of $5,644 and $8,622 at December 31, 2016 and December 31, 2017, respectively	660,775	606,764
Short-term investments ($227,795 and $219,111 restricted at December 31, 2016 and December 31, 2017, respectively)	310,578	297,493
Pharmaceutical inventory	40,945	58,995
Other current assets ($38,785 and $41,121 restricted at December 31, 2016 and December 31, 2017, respectively)	72,323	51,507
Total Current Assets	1,483,353	1,319,267
Property and equipment, net	158,638	172,524
Long-term investments ($6,306 and $17,287 restricted at December 31, 2016 and December 31, 2017, respectively)	17,287	7,760
Deferred income taxes	813	3,125
Other long-term assets	22,567	12,725
Goodwill	1,006,288	742,054
Other intangible assets, net	268,288	186,232
Total Assets	2,957,234	2,443,687
Current Liabilities:
Accounts payable	74,300	95,635
Accrued liabilities	193,635	202,176
Short-term contingent consideration	6,892	9,354
Medical claims payable	327,625	184,136
Other medical liabilities	177,002	197,856
Current debt and capital lease obligations	112,849	403,693
Total Current Liabilities	892,303	1,092,850
Long-term debt and capital lease obligations	740,888	214,686
Deferred income taxes	12,298
Tax contingencies	14,226	13,981
Long-term contingent consideration	1,925	1,799
Deferred credits and other long-term liabilities	19,100	15,882
Total Liabilities	1,680,740	1,339,198
Redeemable non-controlling interest		4,770
STOCKHOLDERS' EQUITY
Preferred stock, par value $.01 per share Authorized—10,000 shares at December 31, 2016 and December 31, 2017-Issued and outstanding-none
Ordinary common stock, par value $.01 per share Authorized-100,000 shares at December 31, 2016 and December 31, 2017-Issued and outstanding-51,993 and 23,517 shares at December 31, 2016, respectively, and 52,973 and 24,202 shares at December 31, 2017, respectively	530	520
Other Stockholders' Equity:
Additional paid-in capital	1,274,811	1,186,283
Retained earnings	1,399,495	1,289,288
Accumulated other comprehensive loss	(380)	(175)
Treasury stock, at cost, 28,476 and 28,771 shares at December 31, 2016 and December 31, 2017, respectively	(1,397,962)	(1,376,197)
Total Stockholders' Equity	1,276,494	1,099,719
Total Liabilities, Redeemable Non-Controlling Interest and Stockholders' Equity	$ 2,957,234	$ 2,443,687