BUSINESS ACQUISITION BUSINESS ACQUISITION (Details - Changes in Contingent Consideration)					3 Months Ended								9 Months Ended
	Oct. 31, 2018 USD ($) payment	Jun. 11, 2018 USD ($) payment	Sep. 19, 2017 USD ($) payment	Jun. 14, 2017 USD ($) payment	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)
Business Acquisition [Line Items]
Contingent consideration payments													$ 3,000,000	$ 26,600,000
Current contingent consideration					$ 32,955,000			$ 11,080,000					32,955,000
Non-current contingent consideration					21,103,000			27,757,000					21,103,000
Change in fair value of contingent consideration					3,839,000				$ 2,105,000				21,221,000	1,197,000
Ovation
Business Acquisition [Line Items]
Initial cash consideration to acquire business		$ 12,200,000
Number of payments | payment		2
Total preliminary purchase price		$ 17,900,000											17,871,000
Contingent consideration		5,800,000			6,600,000								6,600,000
Current contingent consideration					4,400,000								4,400,000
Non-current contingent consideration					2,200,000								2,200,000
Change in fair value of contingent consideration					(800,000)								(800,000)
QuoteWizard
Business Acquisition [Line Items]
Initial cash consideration to acquire business	$ 299,900,000
Number of payments | payment	3
Total preliminary purchase price	$ 313,400,000												313,355,000
Contingent consideration	13,900,000				41,900,000								41,900,000
Current contingent consideration					23,000,000.0								23,000,000.0
Non-current contingent consideration					18,900,000								18,900,000
Change in fair value of contingent consideration					4,300,000								21,200,000
DepositAccounts
Business Acquisition [Line Items]
Initial cash consideration to acquire business				$ 24,000,000.0
Contingent consideration range, maximum				9,000,000.0
Contingent consideration					0								0
Contingent consideration payments						$ 2,000,000.0	$ 1,000,000.0	$ 1,000,000.0	$ 1,000,000	$ 1,000,000	$ 1,000,000	$ 1,000,000.0
Change in fair value of contingent consideration													(1,000,000.0)
Value of potential contingent consideration payments based on specified increases in federal funds interest rates				1,000,000.0
One-time contingent consideration performance payment				$ 2,000,000.0
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					5,500,000								5,500,000
Contingent consideration payments							$ 3,000,000.0
Change in fair value of contingent consideration					$ 300,000								$ 1,800,000
Contingent earnout | Ovation
Business Acquisition [Line Items]
Contingent consideration range, minimum		0
Contingent consideration range, maximum		$ 4,400,000
Contingent earnout | QuoteWizard
Business Acquisition [Line Items]
Contingent consideration range, minimum	0
Contingent consideration range, maximum	$ 23,400,000
Contingent earnout | SnapCap
Business Acquisition [Line Items]
Contingent consideration range, minimum			$ 0
Contingent consideration range, maximum			$ 3,000,000.0