Financial Statement Components (Tables)

6 Months Ended

Jun. 27, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Components of condensed consolidated balance sheets

Condensed Consolidated Balance Sheets Details	At
	June 27, 2015			December 27, 2014
Inventories:
Raw materials and sub-assemblies	$	23,676		$	19,463
Work in process	11,003			7,723
Finished goods	6,860			7,919
Inventories	41,539			35,105
Inventories-delivered systems	1,574			1,912
Total inventories	$	43,113		$	37,017
Property, plant and equipment, net(1):
Land	$	15,572		$	15,572
Building and improvements	19,817			19,641
Machinery and equipment	31,017			29,456
Furniture and fixtures	2,258			2,225
Software	7,965			7,942
Capital in progress	3,554			3,512
Total property, plant and equipment, gross	80,183			78,348
Accumulated depreciation and amortization	(32,642		)	(28,715		)
Total property, plant and equipment, net	$	47,541		$	49,633
(1)Total depreciation and amortization expense for the six months ended June 27, 2015 and June 28, 2014 was $3.4 million and $3.2 million, respectively.
Other current liabilities:
Accrued warranty	$	3,792		$	2,953
Accrued restructuring	424			997
Accrued professional services	787			778
Fair value of current portion of contingent payments to Zygo Corporation related to acquisition	1,119			1,385
Other	2,099			2,152
Total other current liabilities	$	8,221		$	8,265

Components of accumulated other comprehensive income (loss)

Components of Accumulated Other Comprehensive Income (Loss)

	Foreign Currency Translations			Defined Benefit Pension Plans			Unrealized Income (Loss) on Investment			Accumulated Other Comprehensive Income
Balance as of December 27, 2014	$	(2,604	)	$	(134	)	$	(31	)	$	(2,769	)
Current period change	(1,745		)	—			25			(1,720		)
Balance as of June 27, 2015	$	(4,349	)	$	(134	)	$	(6	)	$	(4,489	)