DISCONTINUED OPERATIONS - Narrative (Details) - USD ($)		12 Months Ended
Jun. 30, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Liabilities retained after sale		$ 0	$ 0
Assets of discontinued operations		0	0
USI Insurance Services \| Discontinued operations disposed of by sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of subsidiary	$ 6,900,000	$ 0	$ 0	$ 6,926,000
Liabilities retained after sale	424,000
Proceeds from sale	$ 7,000,000

Amount classified as assets attributable to disposal group held for sale or disposed of.

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