BUSINESS ACQUISITION (Details)				3 Months Ended
	Sep. 19, 2017 USD ($) payment	Jun. 14, 2017 USD ($) payment	Nov. 17, 2016 USD ($) payment	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)	Nov. 16, 2016 USD ($)
Business Acquisition
Payment for Contingent Consideration Liability, Financing Activities					$ 23,500,000	$ 0
Current contingent consideration					28,357,000		$ 46,576,000
Non-current contingent consideration					5,251,000		$ 11,273,000
Change in fair value of contingent consideration					(741,000)	8,746,000
Pro forma revenue						136,578,000
Pro forma net income from continuing operations						$ 7,800,000
After tax contingent consideration tax					5,200,000
CompareCards
Business Acquisition
Initial cash consideration to acquire business			$ 80,700,000
Number of payments | payment			2
Contingent consideration range, maximum								$ 45,000,000
Purchase price consideration on acquisition date			$ 103,800,000
Contingent consideration					22,300,000			23,100,000
Payment for Contingent Consideration Liability, Financing Activities					22,500,000
Change in fair value of contingent consideration					500,000
DepositAccounts
Business Acquisition
Initial cash consideration to acquire business		$ 24,000,000
Number of payments | payment		7
Contingent consideration range, maximum		$ 9,000,000
Purchase price consideration on acquisition date		29,000,000
Contingent consideration		5,000,000			5,900,000
Payment for Contingent Consideration Liability, Financing Activities					1,000,000
Current contingent consideration					2,700,000
Non-current contingent consideration					3,200,000
Change in fair value of contingent consideration					900,000
Contingent consideration payment					1,000,000
Value of potential contingent consideration payments based on specified increases in federal funds interest rates		1,000,000
One-time contingent consideration performance payment		2,000,000
SnapCap
Business Acquisition
Initial cash consideration to acquire business	$ 11,900,000
Number of payments | payment	3
Purchase price consideration on acquisition date	$ 18,200,000
Contingent consideration	6,300,000				4,900,000
Current contingent consideration					2,900,000
Non-current contingent consideration					2,000,000
Change in fair value of contingent consideration					$ 2,100,000
Contingent earnout | CompareCards
Business Acquisition
Contingent consideration range, maximum								22,500,000
Contingent earnout | SnapCap
Business Acquisition
Contingent consideration range, minimum	0
Contingent consideration range, maximum	3,000,000
Minimum
Business Acquisition
Contingent consideration	0	1,000,000
Maximum
Business Acquisition
Contingent consideration	$ 9,000,000	$ 7,000,000						$ 22,500,000
Subsequent Event [Member] | CompareCards
Business Acquisition
Payment for Contingent Consideration Liability, Financing Activities				$ 22,500,000
Change in fair value of contingent consideration				200,000
Subsequent Event [Member] | DepositAccounts
Business Acquisition
Payment for Contingent Consideration Liability, Financing Activities				$ 1,000,000