CONDENSED CONSOLIDATED BALANCE SHEETS - UNAUDITED - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 146,685	$ 205,635
Short-term investments	575	28,037
Total cash, cash equivalents and short-term investments	147,260	233,672
Settlement and merchant reserve assets	172,609	186,267
Trade accounts receivable:
Billed, net of allowance of $4,998 and $4,250	238,831	244,317
Unbilled	51,139	35,802
Income taxes receivable	23,075	6,414
Other current assets	58,811	41,727
Total current assets	691,725	748,199
Non-current assets:
Property and equipment, net of depreciation of $111,994 and $111,244	71,856	73,580
Operating lease right-of-use assets	53,033	86,034
Intangible assets	72,259	86,964
Goodwill	295,196	321,330
Customer contract costs, net of amortization of $32,574 and $32,410	52,194	46,618
Deferred income taxes	13,791	8,584
Other assets	9,091	15,840
Total non-current assets	567,420	638,950
Total assets	1,259,145	1,387,149
Current liabilities:
Current portion of long-term debt	52,500	237,500
Operating lease liabilities	21,726	23,270
Customer deposits	36,442	43,546
Trade accounts payable	32,686	35,397
Accrued employee compensation	51,517	91,115
Settlement and merchant reserve liabilities	171,192	185,276
Deferred revenue	47,067	53,748
Income taxes payable	10,613	398
Other current liabilities	21,637	24,852
Total current liabilities	445,380	695,102
Non-current liabilities:
Long-term debt, net of unamortized discounts of $2,843 and $3,406	377,157	137,219
Operating lease liabilities	58,279	70,068
Deferred revenue	18,738	19,599
Income taxes payable	3,470	4,058
Deferred income taxes	110	7,752
Other non-current liabilities	11,706	13,107
Total non-current liabilities	469,460	251,803
Total liabilities	914,840	946,905
Stockholders' equity:
Preferred stock, par value $.01 per share; 10,000 shares authorized; zero shares issued and outstanding	0	0
Common stock, par value $.01 per share; 100,000 shares authorized; 31,664 and 32,495 shares outstanding	708	705
Additional paid-in capital	488,292	488,303
Treasury stock, at cost; 37,827and 36,713 shares	(995,606)	(930,106)
Accumulated other comprehensive income (loss):
Unrealized loss on short-term investments, net of tax	0	(6)
Cumulative foreign currency translation adjustments	(73,448)	(38,347)
Accumulated earnings	924,359	916,060
Total CSG stockholders' equity	344,305	436,609
Noncontrolling interest	0	3,635
Total stockholders' equity	344,305	440,244
Total liabilities and stockholders' equity	1,259,145	1,387,149
Software
Non-current assets:
Intangible assets	24,585	29,757
Acquired customer contracts
Non-current assets:
Intangible assets	$ 47,674	$ 57,207