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Description of Business and Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2018

Description of Business and Summary of Significant Accounting Policies [Abstract]

Summary Of Inventories

Inventories consist of the following:



		March 31,			December 31,
		2018			2017
Raw materials		$	8,804		$	7,755
Work in process			1,803			1,299
Finished goods			11,964			13,397
Inventories		$	22,571		$	22,451

Summary of Property and Equipment



	Estimated Useful Life
Generators and related equipment	1 - 3 years
Building under capital lease	15 years
Computers, software and office equipment	3 years
Machinery and equipment	3 - 7 years
Furniture and fixtures	3 - 7 years
Leasehold improvements	5 - 15 years
Equipment under capital leases	3 - 5 years

Accumulated Other Comprehensive Income (Loss)

Accumulated other comprehensive income (loss) consisted of the following (net of tax):



		Three Months Ended
		March 31,
		2018			2017
Total accumulated other comprehensive income (loss) at beginning of period		$	34		$	(468)
Unrealized Losses on Investments
Balance at beginning of period		$	(6)		$	(21)
Other comprehensive (loss) income before reclassifications			(8)			2
Amounts reclassified from accumulated other comprehensive income (loss) to other income (loss)			—			—
Balance at end of period		$	(14)		$	(19)
Foreign Currency Translation Adjustment
Balance at beginning of period		$	40		$	(447)
Other comprehensive income before reclassifications			168			52
Amounts reclassified from accumulated other comprehensive income (loss) to other income (loss)			(82)			21
Balance at end of period		$	126		$	(374)
Total accumulated other comprehensive income (loss) at end of period		$	112		$	(393)