Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 482,255	$ 82,407
Accounts receivable, net of allowance of $5,795 and $5,452, respectively	353,289	331,096
Prepaids and other current assets	87,950	96,287
Income and other tax receivables	35,358	40,035
Total current assets	958,852	549,825
Long-term assets
Property, plant and equipment, net	177,099	176,633
Operating lease assets	142,701	150,808
Goodwill	307,139	301,694
Deferred tax assets, net	10,508	13,263
Other intangible assets, net	108,205	115,596
Other long-term assets	62,485	68,969
Total long-term assets	808,137	826,963
Total assets	1,766,989	1,376,788
Current liabilities
Accounts payable	73,640	64,440
Accrued employee compensation and benefits	119,476	114,165
Other accrued expenses	37,892	79,171
Income taxes payable	24,627	11,307
Deferred revenue	33,820	39,447
Current operating lease liabilities	45,121	45,218
Other current liabilities	10,214	9,541
Total current liabilities	344,790	363,289
Long-term liabilities
Line of credit	700,000	290,000
Deferred tax liabilities, net	10,008	10,602
Non-current Income Taxes Payable	25,208	25,208
Non-current operating lease liabilities	116,558	127,395
Other long-term liabilities	68,472	79,641
Total long-term liabilities	920,246	532,846
Total liabilities	1,265,036	896,135
Redeemable noncontrolling interest	54,026	48,923
Stockholders' equity
Preferred stock - $0.01 par value: 10,000,000 shares authorized; zero shares outstanding as of June 30, 2020 and December 31, 2019	0	0
Common stock - $0.01 par value; 150,000,000 shares authorized; 46,682,482 and 46,488,938 shares outstanding as of June 30, 2020 and December 31, 2019, respectively	467	465
Additional paid-in capital	355,968	356,409
Treasury stock at cost: 35,369,771 and 35,563,315 shares as of June 30, 2020 and December 31, 2019, respectively	(602,117)	(605,314)
Accumulated other comprehensive income (loss)	(128,528)	(106,234)
Retained earnings	810,234	773,218
Noncontrolling interest	11,903	13,186
Total stockholders' equity	447,927	431,730
Total liabilities and stockholders' equity	$ 1,766,989	$ 1,376,788