Balance Sheet Details (Tables)

12 Months Ended

Dec. 31, 2016

Balance Sheet Details [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories

Inventories are comprised of the following:

	December 31,
	2016		2015
Materials	$	32,993	$	39,022
Work-in-process	18,764		18,918
Finished goods	13,728		13,550
Total inventories	$	65,485	$	71,490

Property, Plant and Equipment [Table Text Block]

Property, Plant and Equipment

Property, plant and equipment, net is comprised of the following:

	December 31,
	2016			2015
Land and building	$	2,584		$	5,024
Machinery and equipment	23,493			21,683
Furniture and fixtures	2,699			3,414
Computer equipment and software	5,204			5,304
Leasehold improvements	8,116			7,884
	42,096			43,309
Accumulated depreciation	(30,238		)	(30,963		)
Total property, plant and equipment, net	$	11,858		$	12,346

Other Current liabilities [Table Text Block]

Other current liabilities

Other current liabilities is comprised of the following:

	December 31,
	2016		2015
Intangible asset acquisition - Stella Alliance	$	1,000	$	2,000
Litigation accrual	—		3,252
Contingent consideration - acquisitions	855		1,407
Warrant settlement payable	1,025		—
Customer deposits	996		505
Other	3,263		5,251
Total other current liabilities	$	7,139	$	12,415

Other Non-current liabilities [Table Text Block]

Other non-current liabilities

Other non-current liabilities is comprised of the following:

	December 31,
	2016		2015
Unrecognized tax benefits (including interest)	$	3,386	$	3,152
Contingent consideration - acquisitions	2,396		2,296
Deferred revenue	1,132		1,206
Other	2,088		2,900
Total non-current liabilities	$	9,002	$	9,554