INCOME TAX PROVISION Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Tax computed at statutory rate	21.00%	35.00%	35.00%
State income taxes net of federal income tax benefit	7.60%	(5.30%)	11.10%
Worthless stock deduction	0.00%	14.40%	0.00%
Meals and entertainment – non-deductible	(0.80%)	(1.40%)	5.20%
Non-deductible acquisition costs	(0.40%)	(0.70%)	3.80%
ESPP expense	(0.20%)	(0.20%)	0.90%
Repurchase premium	(2.10%)	0.00%	0.00%
Other permanent items	(0.30%)	0.20%	4.30%
Provision to return	(1.10%)	0.00%	2.00%
Tax credits	(1.20%)	(0.00%)	(1.80%)
Decrease in deferred tax assets before valuation allowance due to federal rate change	0.00%	(47.00%)	0.00%
Decrease in valuation allowance on deferred assets that are considered to have indefinite lives due to tax reform	0.40%	24.90%	0.00%
Other changes in valuation allowance, including due to federal rate change	(5.40%)	24.90%	4.00%
Effective tax rate	17.50%	44.80%	64.50%