CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 173,505	$ 200,512
Accounts receivable, net	450,405	471,656
Contract assets	469,918	423,659
Prepaid expenses and other current assets	120,329	86,263
Total current assets	1,214,157	1,182,090
Property and equipment, net	458,616	433,279
Operating lease assets	145,023	158,609
Deferred tax assets	1,341	1,307
Intangible assets, net	167,710	171,320
Goodwill	583,534	581,664
Other long-term assets	27,058	15,058
Total assets	2,597,439	2,543,327
Current liabilities:
Accounts payable	289,563	273,463
Contract liabilities	292,421	240,412
Accrued liabilities	193,070	174,821
Dividends payable	3,198	3,192
Current portion of long-term debt	65,972	67,230
Total current liabilities	844,224	759,118
Long-term debt, net of current portion	599,290	594,232
Noncurrent operating lease liabilities, net of current portion	86,467	98,059
Deferred tax liabilities	38,521	38,510
Other long-term liabilities	41,173	63,353
Total liabilities	1,609,675	1,553,272
Commitments and contingencies (See Note 14)
Stockholders' equity
Common stock-$.0001 par value; 90,000,000 shares authorized; 53,308,136 and 53,194,585 issued and outstanding at March 31, 2022 and December 31, 2021, respectively	6	6
Additional paid-in capital	263,486	261,918
Retained earnings	722,561	727,433
Accumulated other comprehensive income	1,711	698
Total stockholders' equity	987,764	990,055
Total liabilities and stockholders' equity	$ 2,597,439	$ 2,543,327

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).