Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2019

Accounting Policies [Abstract]

Schedule of Revenue Disaggregated by Type of Revenue and Geographic Region

The nature, amount, timing and uncertainty of our revenues and how revenues and cash flows are affected by economic factors is most appropriately depicted by type of revenues and by geographic region (using the location of the client as the basis of attributing revenues to the individual regions) as follows (in thousands):

	Quarter Ended				Nine Months Ended
	September 30,				September 30,
	2019		2018		2019		2018
Cloud and related solutions	$	224,347	$	186,473	$	666,120	$	551,390
Software and services		14,406		14,283		39,607		39,573
Maintenance		12,661		12,299		36,336		36,829
Total revenues	$	251,414	$	213,055	$	742,063	$	627,792

	Quarter Ended				Nine Months Ended
	September 30,				September 30,
	2019		2018		2019		2018
Americas (principally the U.S.)	$	218,694	$	180,489	$	643,814	$	530,609
Europe, Middle East, and Africa		23,284		21,723		70,516		64,135
Asia Pacific		9,436		10,843		27,733		33,048
Total revenues	$	251,414	$	213,055	$	742,063	$	627,792

Fair Value Measurements

The following table represents the fair value hierarchy based upon three levels of inputs, of which Levels 1 and 2 are considered observable and Level 3 is unobservable, for our financial assets measured at fair value (in thousands):

	September 30, 2019						December 31, 2018
	Level 1		Level 2		Total		Level 1		Level 2		Total
Cash equivalents:
Money market funds	$	8,564	$	—	$	8,564	$	4,392	$	—	$	4,392
Commercial paper		—		2,794		2,794		—		9,078		9,078
Short-term investments:
Corporate debt securities		—		5,018		5,018		—		16,357		16,357
U.S. government agency bonds		—		2,904		2,904		—		3,724		3,724
Asset-backed securities		—		3,415		3,415		—		3,522		3,522
Total	$	8,564	$	14,131	$	22,695	$	4,392	$	32,681	$	37,073

Carrying Value (Par Value for Convertible Debt) and Estimated Fair Value of Debt

We have chosen not to measure our debt at fair value, with changes recognized in earnings each reporting period.  The following table indicates the carrying value (par value for convertible debt) and estimated fair value of our debt as of the indicated periods (in thousands):

	September 30, 2019				December 31, 2018
	Carrying		Fair		Carrying		Fair
	Value		Value		Value		Value
2018 Credit Agreement (carrying value including current maturities)	$	138,750	$	138,750	$	144,375	$	144,375
2016 Convertible debt (par value)		230,000		261,050		230,000		228,275