ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property, Plant, and Equipment (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($)
Property, Plant and Equipment [Line Items]
Impairment of computer hardware and software	$ 0.4
Office furniture and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets	5 years
Office furniture and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets	7 years
Computer hardware and software | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets	3 years
Computer hardware and software | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets	5 years
Automobiles | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets	3 years
Automobiles | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets	5 years
Leasehold improvements | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets	2 years
Leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets	10 years