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INVENTORY - (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
On-hand final assemblies and finished goods inventories	$ 13,283	$ 19,879
Deferred cost of goods sold	2,441	3,798
Gross inventory	15,724	23,677
Less noncurrent portion (included in Other assets)	(924)	(1,075)
Current portion	$ 14,800	$ 22,602

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- Definition

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of deferred costs of goods sold.

+ References

No definition available.

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- Definition

The aggregated amount of merchandise or goods held by the entity and readily available for future sale and deferred cost of goods sold. Deferred cost of goods sold includes inventory at the customer site and third party costs. This amount is net of valuation reserves and adjustments.

+ References

No definition available.

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- Definition

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.BB)
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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-Subparagraph (SX 210.5-02(6)(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-Paragraph 1
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Inventories not expected to be converted to cash, sold or exchanged within the normal operating cycle.

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-Name Accounting Standards Codification
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