BUSINESS ACQUISITION BUSINESS ACQUISITION (Details - Changes in Contingent Consideration)			3 Months Ended
	Sep. 19, 2017 USD ($) payment	Jun. 14, 2017 USD ($) payment	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)
Business Acquisition [Line Items]
Contingent consideration payments				$ 3,000,000			$ 23,500,000
Current contingent consideration				30,710,000	$ 11,080,000
Non-current contingent consideration				18,719,000	27,757,000
Change in fair value of contingent consideration				14,592,000			(741,000)
DepositAccounts
Business Acquisition [Line Items]
Initial cash consideration to acquire business		$ 24,000,000
Contingent consideration range, maximum		9,000,000
Contingent consideration				2,200,000
Contingent consideration payment						$ 1,000,000
Contingent consideration payments				1,000,000	$ 1,000,000
Change in fair value of contingent consideration				800,000			900,000
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
Number Of Contingent Consideration Payments | payment		7
SnapCap
Business Acquisition [Line Items]
Initial cash consideration to acquire business	$ 11,900,000			0			10,000
Number of payments | payment	3
Contingent consideration				5,300,000
Contingent consideration payments				3,000,000
Current contingent consideration				2,900,000
Non-current contingent consideration				2,400,000
Change in fair value of contingent consideration				$ 1,600,000			$ 2,100,000
Contingent earnout | SnapCap
Business Acquisition [Line Items]
Contingent consideration range, minimum	$ 0
Contingent consideration range, maximum	$ 3,000,000
Subsequent Event | DepositAccounts
Business Acquisition [Line Items]
Contingent consideration payments			$ 2,000,000