SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS AND RESERVES

12 Months Ended

Dec. 31, 2016

Valuation and Qualifying Accounts [Abstract]

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS AND RESERVES

SCHEDULE II(a) - VALUATION AND QUALIFYING ACCOUNTS AND RESERVES

ALLOWANCE FOR DOUBTFUL ACCOUNTS

	Balance at beginning of period		Additions charged to income		Accounts receivable written off			Other Adjustments			Balance at end of period
Year ended -
December 31, 2014	$	419	$	140	$	—		$	(17	)	$	542
December 31, 2015	$	542	$	1,072	$	(191	)	$	(449	)	$	974
December 31, 2016	$	974	$	873	$	(351	)	$	(350	)	$	1,146

SCHEDULE II(b) - VALUATION AND QUALIFYING ACCOUNTS AND RESERVES

WARRANTY RESERVE

	Balance at beginning of period		Additions charged to income		Repairs allowed			Other Adjustments			Balance at end of period
Year ended -
December 31, 2014	$	188	$	162	$	(216	)	$	(4	)	$	130
December 31, 2015	$	130	$	339	$	(308	)	$	(31	)	$	130
December 31, 2016	$	130	$	535	$	(140	)	$	—		$	525

SCHEDULE II(c) - VALUATION AND QUALIFYING ACCOUNTS AND RESERVES

INVENTORY RESERVE

	Balance at beginning of period		Additions charged to income		Inventory write-offs			Other Adjustments		Balance at end of period
Year ended -
December 31, 2014	$	1,729	$	1,287	$	(77	)	178		$	3,117
December 31, 2015	$	3,117	$	1,952	$	(1,160	)	(227	)	$	3,682
December 31, 2016	$	3,682	$	1,738	$	(1,198	)	4		$	4,226