Other Financial Statement Data (Tables)

6 Months Ended

Jun. 30, 2016

Balance Sheet Related Disclosures [Abstract]

Schedule of Inventory Components

The make-up of our inventories is as follows:

(In thousands)	June 30, 2016		December 31, 2015
Raw materials and purchased parts	$	6,480	$	6,787
Work in process	780		508
Finished goods	5,243		5,970
Total inventories	$	12,503	$	13,265

Schedule of Accrued Liabilities

The components of our accrued expenses are as follows:

(In thousands)	June 30, 2016		December 31, 2015
Wages and benefits	$	2,241	$	1,014
Warranty liability	685		584
Other	370		361
	$	3,296	$	1,959

Schedule of Changes In Estimated Warranty Liability

A reconciliation of the changes in our estimated warranty liability is as follows:

	Six Months Ended June 30,
(In thousands)	2016			2015
Balance at beginning of period	$	645		$	839
Accrual for warranties	447			287
Warranty revision	(25		)	10
Settlements made during the period	(295		)	(426		)
Balance at end of period	772			710
Current portion of estimated warranty liability	(685		)	(635		)
Long-term estimated warranty liability	$	87		$	75

Schedule of Changes In Deferred Warranty Revenue

A reconciliation of the changes in our deferred warranty revenue is as follows:

	Six Months Ended June 30,
(In thousands)	2016			2015
Balance at beginning of period	$	199		$	475
Revenue deferrals	203			212
Amortization of deferred revenue	(226		)	(365		)
Total deferred warranty revenue	176			322
Current portion of deferred warranty revenue	(171		)	(307		)
Long-term deferred warranty revenue	$	5		$	15