Details of Selected Balance Sheet Accounts (Tables)

6 Months Ended

Jun. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of Inventories

Inventories

The following table is a summary of inventories (in thousands):	June 30, 2017			December 31, 2016
Raw materials and subassemblies	$	21,216		$	21,454
Work-in-process	724			2,255
Finished goods	7,649			6,581
Reserve for excess and obsolete inventories	(14,966		)	(15,049		)
Total	$	14,623		$	15,241

Summary of Other Long-term Liabilities

Other Long-term Liabilities

The following table is a summary of other long-term liabilities (in thousands):	June 30, 2017		December 31, 2016
Deferred rents	13,410		13,955
Facility restructuring accrual	—		1,765
Deferred income tax liability	2,740		3,679
Other long-term liabilities	2,427		1,128
Total	$	18,577	$	20,527