CONSOLIDATED BALANCE SHEETS (Unaudited) (Parentheticals) - USD ($) shares in Thousands, $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Funds held for customers, securities carried at fair value	$ 8,501	$ 13,307
Accumulated depreciation	368,760	338,617
Accumulated amortization	$ 754,601	$ 698,764
Common stock, par value (per share)	$ 1	$ 1
Common stock, shares authorized	500,000	500,000
Common stock, shares outstanding	43,080	42,679