OUTSOURCED GOVERNMENT CONTRACTS - Summary of Enterprise-Wide Outsourced Digital Government Services to Multiple Governments Agencies (Detail)	9 Months Ended
	Sep. 30, 2017
NICUSA, IL Division
Contracts [Line Items]
State	Illinois
Year Services Commenced	2017
Contract Expiration Date	Jun. 29, 2023
NICUSA, IL Division | Renewal Term
Contracts [Line Items]
Contract Expiration Date	Jun. 29, 2027
Louisiana Interactive, LLC
Contracts [Line Items]
State	Louisiana
Year Services Commenced	2015
Contract Expiration Date	Jan. 28, 2020
Connecticut Interactive, LLC
Contracts [Line Items]
State	Connecticut
Year Services Commenced	2014
Contract Expiration Date	Jan. 09, 2020
Wisconsin Interactive Network, LLC
Contracts [Line Items]
State	Wisconsin
Year Services Commenced	2013
Contract Expiration Date	May 13, 2018
Wisconsin Interactive Network, LLC | Renewal Term
Contracts [Line Items]
Contract Expiration Date	May 13, 2023
Pennsylvania Interactive, LLC
Contracts [Line Items]
State	Pennsylvania
Year Services Commenced	2012
Contract Expiration Date	Nov. 30, 2019
Pennsylvania Interactive, LLC | Renewal Term
Contracts [Line Items]
Contract Expiration Date	Nov. 30, 2022
NICUSA, OR Division
Contracts [Line Items]
State	Oregon
Year Services Commenced	2011
Contract Expiration Date	Nov. 22, 2021
NICUSA, MD Division
Contracts [Line Items]
State	Maryland
Year Services Commenced	2011
Contract Expiration Date	Aug. 10, 2018
NICUSA, MD Division | Renewal Term
Contracts [Line Items]
Contract Expiration Date	Aug. 10, 2019
Mississippi Interactive, LLC
Contracts [Line Items]
State	Mississippi
Year Services Commenced	2011
Contract Expiration Date	Dec. 31, 2017
Mississippi Interactive, LLC | Renewal Term
Contracts [Line Items]
Contract Expiration Date	Dec. 31, 2021
New Jersey Interactive, LLC
Contracts [Line Items]
State	New Jersey
Year Services Commenced	2009
Contract Expiration Date	May 01, 2020
New Jersey Interactive, LLC | Renewal Term
Contracts [Line Items]
Contract Expiration Date	May 01, 2022
Texas NICUSA, LLC
Contracts [Line Items]
State	Texas
Year Services Commenced	2009
Contract Expiration Date	Aug. 31, 2018
West Virginia Interactive, LLC
Contracts [Line Items]
State	West Virginia
Year Services Commenced	2007
Contract Expiration Date	Jun. 30, 2021
West Virginia Interactive, LLC | Renewal Term
Contracts [Line Items]
Contract Expiration Date	Jun. 30, 2024
Vermont Information Consortium, LLC
Contracts [Line Items]
State	Vermont
Year Services Commenced	2006
Contract Expiration Date	Jun. 08, 2019
Colorado Interactive, LLC
Contracts [Line Items]
State	Colorado
Year Services Commenced	2005
Contract Expiration Date	Apr. 30, 2019
Colorado Interactive, LLC | Renewal Term
Contracts [Line Items]
Contract Expiration Date	Apr. 30, 2023
South Carolina Interactive, LLC
Contracts [Line Items]
State	South Carolina
Year Services Commenced	2005
Contract Expiration Date	Jul. 15, 2019
South Carolina Interactive, LLC | Renewal Term
Contracts [Line Items]
Contract Expiration Date	Jul. 15, 2021
Kentucky Interactive, LLC
Contracts [Line Items]
State	Kentucky
Year Services Commenced	2003
Contract Expiration Date	Aug. 31, 2018
Alabama Interactive, LLC
Contracts [Line Items]
State	Alabama
Year Services Commenced	2002
Contract Expiration Date	Mar. 19, 2020
Alabama Interactive, LLC | Renewal Term
Contracts [Line Items]
Contract Expiration Date	Mar. 19, 2022
Rhode Island Interactive, LLC
Contracts [Line Items]
State	Rhode Island
Year Services Commenced	2001
Contract Expiration Date	Jul. 01, 2018
Rhode Island Interactive, LLC | Renewal Term
Contracts [Line Items]
Contract Expiration Date	Jul. 01, 2019
Oklahoma Interactive, LLC
Contracts [Line Items]
State	Oklahoma
Year Services Commenced	2001
Contract Expiration Date	Mar. 31, 2018
Oklahoma Interactive, LLC | Renewal Term
Contracts [Line Items]
Contract Expiration Date	Mar. 31, 2020
Montana Interactive, LLC
Contracts [Line Items]
State	Montana
Year Services Commenced	2001
Contract Expiration Date	Dec. 31, 2019
Montana Interactive, LLC | Renewal Term
Contracts [Line Items]
Contract Expiration Date	Dec. 31, 2020
Hawaii Information Consortium, LLC
Contracts [Line Items]
State	Hawaii
Year Services Commenced	2000
Contract Expiration Date	Jan. 03, 2019
Hawaii Information Consortium, LLC | Renewal Term
Contracts [Line Items]
Term of contract (in years)	P3Y
Idaho Information Consortium, LLC
Contracts [Line Items]
State	Idaho
Year Services Commenced	2000
Contract Expiration Date	Jun. 30, 2018
Utah Interactive, LLC
Contracts [Line Items]
State	Utah
Year Services Commenced	1999
Contract Expiration Date	Jun. 05, 2019
Maine Information Network, LLC
Contracts [Line Items]
State	Maine
Year Services Commenced	1999
Contract Expiration Date	Jul. 01, 2018
Arkansas Information Consortium, LLC
Contracts [Line Items]
State	Arkansas
Year Services Commenced	1997
Contract Expiration Date	Jun. 30, 2018
Indiana Interactive, LLC
Contracts [Line Items]
State	Indiana
Year Services Commenced	1995
Contract Expiration Date	Oct. 24, 2021
Indiana Interactive, LLC | Renewal Term
Contracts [Line Items]
Contract Expiration Date
Nebraska Interactive, LLC
Contracts [Line Items]
State	Nebraska
Year Services Commenced	1995
Contract Expiration Date	Apr. 01, 2019
Nebraska Interactive, LLC | Renewal Term
Contracts [Line Items]
Contract Expiration Date	Apr. 01, 2021
Kansas Information Consortium, LLC
Contracts [Line Items]
State	Kansas
Year Services Commenced	1992
Contract Expiration Date	Dec. 31, 2022
Kansas Information Consortium, LLC | Renewal Term
Contracts [Line Items]
Term of contract (in years)	P1Y