CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 163,338	$ 123,122
Trade accounts receivable, net of allowances for uncollectible accounts	172,901	161,959
Inventories and supplies	33,267	40,130
Funds held for customers, including securities carried at fair value of $25,112 and $28,462, respectively	135,604	119,749
Revenue in excess of billings	32,057	17,617
Other current assets	66,191	44,054
Total current assets	603,358	506,631
Deferred income taxes	3,387	6,642
Long-term investments	46,493	45,919
Property, plant and equipment, net of accumulated depreciation of $356,350 and $360,907, respectively	96,354	88,680
Operating lease assets	62,362	35,906
Intangibles, net of accumulated amortization of $639,316 and $587,273, respectively	521,452	246,760
Goodwill	1,439,303	702,958
Other non-current assets	244,767	208,679
Total assets	3,017,476	1,842,175
Current liabilities:
Accounts payable	137,303	116,990
Funds held for customers	134,911	117,647
Accrued liabilities	197,891	177,183
Current portion of long-term debt	57,130	0
Total current liabilities	527,235	411,820
Long-term debt	1,776,281	840,000
Operating lease liabilities	52,919	28,344
Deferred income taxes	64,723	5,401
Other non-current liabilities	44,047	43,218
Commitments and contingencies (Notes 14 and 17)
Shareholders' equity:
Common shares $1 par value (authorized: 500,000 shares; outstanding: June 30, 2021 - 42,537; December 31, 2020 - 41,973)	42,537	41,973
Additional paid-in capital	41,607	17,558
Retained earnings	505,753	495,153
Accumulated other comprehensive loss	(37,829)	(41,433)
Non-controlling interest	203	141
Total shareholders' equity	552,271	513,392
Total liabilities and shareholders' equity	$ 3,017,476	$ 1,842,175