CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 228,546	$ 120,286
Accounts receivable, net	494,453	404,911
Contract assets	361,099	344,806
Prepaid expenses and other current assets	32,977	42,704
Total current assets	1,117,075	912,707
Property and equipment, net	366,721	375,888
Operating lease assets	221,615	242,385
Deferred tax assets	1,134	1,100
Intangible assets, net	62,994	69,829
Goodwill	215,103	215,103
Other long-term assets	14,860	13,453
Total assets	1,999,502	1,830,465
Current liabilities:
Accounts payable	251,979	235,972
Contract liabilities	256,021	192,397
Accrued liabilities	223,637	183,501
Dividends payable	2,887	2,919
Current portion of long-term debt	47,708	55,659
Total current liabilities	782,232	670,448
Long-term debt, net of current portion	281,360	295,642
Noncurrent operating lease liabilities, net of current portion	151,777	171,225
Deferred tax liabilities	17,820	17,819
Other long-term liabilities	82,791	45,801
Total liabilities	1,315,980	1,200,935
Commitments and contingencies (See Note 16)
Stockholders' equity
Common stock-$.0001 par value; 90,000,000 shares authorized; 48,096,318 and 48,665,138 issued and outstanding at September 30, 2020 and December 31, 2019, respectively	5	5
Additional paid-in capital	88,363	97,130
Retained earnings	595,769	531,291
Accumulated other comprehensive (loss) income	(651)	76
Noncontrolling interest	36	1,028
Total stockholders' equity	683,522	629,530
Total liabilities and stockholders' equity	$ 1,999,502	$ 1,830,465