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INCOME TAXES - TAX CREDIT CARRYFORWARDS (Details) - Research and Development	Dec. 31, 2018 USD ($)
Federal
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	$ 35,500,000
State
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	$ 19,200,000

X

- Definition

The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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