CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
CURRENT ASSETS:
Cash and cash equivalents	$ 219,513	$ 343,849
Accounts receivable, net	573,650	377,658
Inventories	241,948	274,004
Prepaid expenses and other current assets	94,603	98,744
Total current assets	1,129,714	1,094,255
NONCURRENT ASSETS:
Property and equipment, net	120,969	120,630
Operating lease right-of-use asset	87,789	84,159
Intangible assets, net	19,317	20,092
Referral sources, net	307,482	315,304
Goodwill	1,540,246	1,540,246
Other noncurrent assets	44,045	42,349
Total noncurrent assets	2,119,848	2,122,780
TOTAL ASSETS	3,249,562	3,217,035
CURRENT LIABILITIES:
Accounts payable	485,736	426,513
Accrued compensation and employee benefits	42,624	92,508
Accrued expenses and other current liabilities	83,383	75,010
Current portion of operating lease liability	19,209	18,278
Current portion of long-term debt	6,000	6,000
Total current liabilities	636,952	618,309
NONCURRENT LIABILITIES:
Long-term debt, net of discount, deferred financing costs and current portion	1,056,282	1,056,650
Operating lease liability, net of current portion	89,207	85,484
Deferred income taxes	37,884	34,920
Other noncurrent liabilities	89	0
Total noncurrent liabilities	1,183,462	1,177,054
Total liabilities	1,820,414	1,795,363
STOCKHOLDERS’ EQUITY:
Preferred stock; $0.0001 par value; 12,500,000 shares authorized, no shares outstanding as of March 31, 2024 and December 31, 2023	0	0
Common stock; $0.0000 par value: 250,000,000 shares authorized, 183,397,817 shares issued and 173,816,056 shares outstanding as of March 31, 2024; 182,905,559 shares issued and 174,575,537 shares outstanding as of December 31, 2023	18	18
Treasury stock; 9,581,761 and 8,330,022 shares outstanding, at cost, as of March 31, 2024 and December 31, 2023, respectively	(295,396)	(255,107)
Paid-in capital	1,205,693	1,204,270
Retained earnings	502,304	457,513
Accumulated other comprehensive income	16,529	14,978
Total stockholders’ equity	1,429,148	1,421,672
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 3,249,562	$ 3,217,035