Goodwill and Other Intangible Assets - Summary of Changes in Carrying Amount of Goodwill (Detail) (USD $)	1 Months Ended	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill [Line Items]
Goodwill Beginning Balance			$ 121,011,000	$ 121,011,000
Goodwill Ending Balance	124,142,000	124,142,000	121,011,000	121,011,000
SoftCode, Inc. [Member]
Goodwill [Line Items]
Goodwill acquired	125,000	3,131,000
Enterprise Software Solutions [Member]
Goodwill [Line Items]
Goodwill Beginning Balance			114,454,000	114,454,000
Goodwill Ending Balance	117,585,000	117,585,000	114,454,000	114,454,000
Enterprise Software Solutions [Member] | SoftCode, Inc. [Member]
Goodwill [Line Items]
Goodwill acquired		3,131,000
Appraisal and Tax Software Solutions and Services [Member]
Goodwill [Line Items]
Goodwill Beginning Balance			6,557,000	6,557,000
Goodwill Ending Balance	$ 6,557,000	$ 6,557,000	$ 6,557,000	$ 6,557,000