Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net (loss) income	$ (19,482,000)	$ 35,728,000	$ (33,933,000)
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	27,815,000	31,444,000	34,255,000
Amortization of intangibles	58,441,000	39,457,000	38,056,000
Deferred income taxes	(13,411,000)	(4,809,000)	74,577,000
Amortization of deferred customer acquisition costs	11,359,000	10,287,000	0
Allowance for doubtful accounts and obsolete inventory	2,247,000	2,010,000	2,399,000
Amortization of Debt Issuance Costs and Discounts	8,907,000	1,022,000	1,074,000
Loss on disposal of property and equipment	(771,000)	(79,000)	(212,000)
Loss on extinguishment of debt	0	14,000	0
Share-based expense	45,242,000	33,799,000	37,482,000
Gain on sale of business	0	0	1,879,000
Change in derivatives	531,000	198,000	0
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	(29,139,000)	(20,485,000)	(7,253,000)
Inventory	27,000	1,233,000	789,000
Prepaid expenses and other current assets	1,956,000	2,787,000	3,339,000
Deferred customer acquisition costs	(30,546,000)	(25,439,000)	1,729,000
Accounts payable and accrued expenses	38,027,000	13,502,000	(24,025,000)
Deferred revenue	3,947,000	1,416,000	(2,584,000)
Other assets - cloud computing implementation costs	(15,480,000)	(6,255,000)	0
Other assets and liabilities	2,776,000	7,613,000	3,820,000
Net cash provided by operating activities	92,926,000	123,205,000	128,058,000
Cash flows from investing activities:
Capital expenditures	(20,273,000)	(19,032,000)	(21,915,000)
Purchase of intangible assets	(318,000)	0	0
Maturities and sales of marketable securities	0	0	602,000
Acquisition and development of software assets	(28,488,000)	(7,714,000)	(11,374,000)
Acquisitions, net of cash acquired	(3,000,000)	(380,484,000)	0
Proceeds from sale of business	0	0	1,950,000
Net cash used in investing activities	(52,079,000)	(407,230,000)	(30,737,000)
Cash flows from financing activities:
Principal payments on capital lease obligations and other financing obligations	0	(140,000)	(5,788,000)
Payments on short and long-term debt	(443,500,000)	(320,188,000)	(101,750,000)
Proceeds from issuance of short and long-term debt	489,000,000	607,000,000	15,000,000
Payment of debt issuance costs	(10,043,000)	(3,380,000)	0
Payments for capped call transactions and costs	(28,325,000)	0	0
Common stock repurchases	(10,000,000)	0	(9,542,000)
Employee taxes paid on withholding shares	(21,034,000)	(31,584,000)	(15,572,000)
Proceeds from exercise of stock options	1,981,000	6,504,000	21,410,000
Net cash (used in) provided by financing activities	(21,921,000)	258,212,000	(96,242,000)
Effect of exchange rate changes on cash and cash equivalents	(395,000)	(410,000)	1,319,000
Net increase (decrease) in cash, cash equivalents, and restricted cash	18,531,000	(26,223,000)	2,398,000
Cash, cash equivalents, and restricted cash, beginning of period	7,104,000	33,327,000	30,929,000
Cash, cash equivalents, and restricted cash, end of period	$ 23,620,000	$ 5,057,000	$ 31,360,000