CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Revenues
Software as a service and platform as a service		$ 425,572		$ 411,289		$ 446,057
License		293,124		273,466		251,205
Maintenance		222,071		233,476		241,895
Services		83,424		87,470		106,820
Total revenues		1,024,191		1,005,701		1,045,977
Operating expenses
Cost of revenue	[1]	452,286		444,914		472,299
Research and development		136,921		169,900	[2]	145,924
Selling and marketing		107,885		118,082	[2]	129,407
General and administrative		153,032	[3]	113,617	[2]	87,419
Gain on sale of CFS assets				(151,463)
Depreciation and amortization		89,427		89,521		82,980
Total operating expenses		939,551		784,571		918,029
Operating income (loss)		84,640		221,130	[2]	127,948
Other income (expense)
Interest expense		(39,013)		(40,184)		(41,372)
Interest income		564		530		386
Other, net		(2,619)		4,105		26,411
Total other income (expense)		(41,068)		(35,549)		(14,575)
Income before income taxes		43,572		185,581	[2]	113,373
Income tax expense		38,437		56,046	[2]	27,937
Net income		$ 5,135		$ 129,535	[2]	$ 85,436
Earnings per common share
Basic		$ 0.04		$ 1.10		$ 0.73
Diluted		$ 0.04		$ 1.09		$ 0.72
Weighted average common shares outstanding
Basic		118,059		117,533		117,465
Diluted		119,444		118,847		118,919

[1] The cost of revenue excludes charges for depreciation but includes amortization of purchased and developed software for resale.

[2] The Company adopted ASU 2016-09, Compensation - Stock Compensation: Improvements to Employee Share-Based Payment Accounting, ("ASU 2016-09") during the year ended December 31, 2016. The Company elected to early adopt ASU 2016-09 in the third quarter of 2016, which requires it to reflect any adjustments as of January 1, 2016, the beginning of the annual period that includes the interim period of adoption. The impact of the adoption to the Company's previously reported quarterly results for the quarters ended March 31 and June 30, 2016 are reflected in the table above.

[3] General and administrative expenses in the second quarter includes the BHMI judgment as discussed in Note 14.