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DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Summary of Warranty Liability - (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Warranty Liability
Obligation to specific customer causing warranty liabilities decrease		$ 371
Changes in the carrying amount of the total product warranty liability
Balance, beginning of period	$ 601	1,054
Addition to (reduction of) warranty reserve	83	(72)
Warranty claims	(13)	(381)
Balance, end of period	$ 671	$ 601
Minimum
Warranty Liability
Term of warranty	1 year
Maximum
Warranty Liability
Term of warranty	5 years

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- Definition

Represents the term of warranty.

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount of decrease in the standard and extended product warranty accrual from payments made in cash or in kind to satisfy claims under the terms of the standard and extended product warranty.

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Amount of increase (decrease) in the standard and extended product warranty liability.

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