CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 322,477		$ 438,961	$ 558,248	$ 573,383
Restricted cash and investments	302,410		338,635
Short-term investments	10,518		12,868
Premiums, commissions and fees receivable	847,132		844,815
Reinsurance recoverable	51,356		65,396
Prepaid reinsurance premiums	314,363		337,920
Other current assets	146,492	$ 125,712	128,716
Total current assets	1,994,748		2,167,311
Fixed assets, net	117,364		100,395
Operating Lease, Right-of-Use Asset	174,580	178,304	0
Goodwill	3,513,218		3,432,786
Amortizable intangible assets, net	907,638		898,807
Investments	17,528		17,394
Other assets	81,213		71,975
Total assets	6,806,289	6,863,968	6,688,668	5,615,083
Current Liabilities:
Premiums payable to insurance companies	801,475		857,559
Losses and loss adjustment reserve	51,356		65,212
Unearned premiums	314,363		337,920
Premium deposits and credits due customers	94,426		105,640
Accounts payable	136,467		87,345
Accrued expenses and other liabilities	193,986	293,146	279,310
Current portion of long-term debt	55,000		50,000
Total current liabilities	1,647,073		1,782,986
Long-term debt less unamortized discount and debt issuance costs	1,439,998		1,456,990
Operating Lease, Liability	159,823	$ 161,464	0
Deferred income taxes, net	300,857		315,732
Other liabilities	160,107		132,392
Shareholders’ Equity:
Common stock, par value $0.10 per share; authorized 560,000 shares; issued 286,961 shares and outstanding 276,074 shares at 2018, issued 286,929 shares and outstanding 276,210 shares at 2017 - in thousands. 2017 share amounts restated for the 2-for-1 stock split effective March 28, 2018	29,584		29,338
Additional paid-in capital	621,249		615,180
Treasury stock, at cost at 10,887 shares at 2018 and 10,719 shares at 2017, respectively - in thousands.	(477,572)		(477,572)
Retained earnings	2,925,170		2,833,622
Total shareholders’ equity	3,098,431		3,000,568	$ 2,770,593	$ 2,582,699
Total liabilities and shareholders’ equity	$ 6,806,289		$ 6,688,668