Annual report pursuant to Section 13 and 15(d)

INCOME TAXES - Change in Deferred Tax Asset Valuation Allowance (Details)

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INCOME TAXES - Change in Deferred Tax Asset Valuation Allowance (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
Changes in deferred tax asset valuation allowance:  
December 31, 2018 $ 104,705
December 31, 2019 123,434
Increase due to current year operations  
Changes in deferred tax asset valuation allowance:  
Change in valuation allowance $ 18,729