Consolidated Statements of Cash Flows (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities
Net income	$ 34,595	$ 28,366
Adjustment to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	23,021	25,670
Amortization of contract acquisition costs	1,009	2,697
Amortization of debt issuance costs and other	290	0
Accretion expense	531	0
Provision for doubtful accounts	0	643
Gain on disposal of assets	(696)	(211)
Impairment losses	230	679
Deferred income taxes	8,076	(1,564)
Excess tax benefit from equity-based awards	(772)	0
Equity-based compensation expense	7,715	6,595
Loss on foreign currency derivatives	531	328
Changes in assets and liabilities:
Accounts receivable	5,908	14,044
Prepaids and other assets	(8,644)	1,964
Accounts payable and accrued expenses	(17,950)	7,826
Deferred revenue and other liabilities	(5,863)	(12,402)
Net cash provided by operating activities	47,981	74,635
Cash flows from investing activities
Proceeds from sale of property, plant, and equipment	2,328	0
Purchases of property, plant and equipment	(12,362)	(12,316)
Acquisition of PRG and eLoyalty business unit, net of cash acquired of $14	(43,884)	0
Net cash used in investing activities	(53,918)	(12,316)
Cash flows from financing activities
Proceeds from line of credit	406,100	490,700
Payments on line of credit	(288,100)	(490,700)
Payments on capital lease obligations and equipment financing	(1,088)	(1,911)
Dividends distributed to noncontrolling interest	(1,859)	(2,070)
Proceeds from exercise of stock options	3,673	874
Excess tax benefit from equity-based awards	3,099	128
Purchases of treasury stock	(43,748)	(37,305)
Payments of debt refinancing fees	(22)	0
Net cash provided by (used in) financing activities	78,055	(40,284)
Effect of exchange rate changes on cash and cash equivalents	2,783	25
Increase in cash and cash equivalents	74,901	22,060
Cash and cash equivalents, beginning of period	119,385	109,424
Cash and cash equivalents, end of period	194,286	131,484
Supplemental disclosures
Cash paid for interest	2,026	1,165
Cash paid for income taxes	14,875	5,961
Non-cash investing and financing activities
Acquisition of equipment through installment purchase agreements	$ 0	$ 186