SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

3 Months Ended

Mar. 31, 2020

Accounting Policies [Abstract]

Schedule of inventory

Inventory consisted of the following:

(In thousands)	March 31, 2020		December 31, 2019
Raw materials	$	27,614	$	24,958
Semi-finished and finished goods	41,810		36,766
Total inventory	$	69,424	$	61,724

Schedule of potentially issuable common shares not included in the computation of diluted net loss per share because they would have an anti-dilutive effect

The following potentially issuable common shares were not included in the computation of diluted net loss per share because they would have an anti-dilutive effect due to net losses for each period:

​	March 31,
(In thousands)	2020	2019
Shares issuable upon exercise of stock options	2,841	2,482
Shares issuable upon the release of restricted stock awards	4,823	4,216
Shares issuable upon conversion of convertible notes	20,309	12,197
​	27,973	18,895