Balance Sheet Details - (Tables)

6 Months Ended

Jun. 30, 2017

Balance Sheet Detail [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories are comprised of the following:

	June 30, 2017		December 31, 2016
Materials	$	34,739	$	32,993
Work-in-process	19,862		18,764
Finished goods	12,234		13,728
Total inventories	$	66,835	$	65,485

Property, Plant and Equipment [Table Text Block]

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

	June 30, 2017			December 31, 2016
Land and building	$	2,584		$	2,584
Machinery and equipment	26,803			23,493
Furniture and fixtures	3,036			2,699
Computer equipment and software	5,682			5,204
Leasehold improvements	8,952			8,116
	47,057			42,096
Accumulated depreciation	(31,966		)	(30,238		)
Total property, plant and equipment, net	$	15,091		$	11,858

Schedule of Other Assets [Table Text Block]

Other assets is comprised of the following:

	June 30, 2017		December 31, 2016
Deferred income taxes	$	32,165	$	30,850
Other	590		593
Total other assets	$	32,755	$	31,443

Other Current liabilities [Table Text Block]

Other current liabilities is comprised of the following:

	June 30, 2017		December 31, 2016
Intangible asset acquisition - Stella Alliance	$	1,000	$	1,000
Contingent consideration - acquisitions	634		855
Warrant settlement payable	—		1,025
Customer deposits	983		996
Other	5,105		3,263
Total other current liabilities	$	7,722	$	7,139

Other Non-current liabilities [Table Text Block]

Other non-current liabilities is comprised of the following:

	June 30, 2017		December 31, 2016
Unrecognized tax benefits (including interest)	$	4,866	$	3,386
Contingent consideration - acquisitions	2,391		2,396
Deferred revenue	1,299		1,132
Other	2,691		2,088
Total other non-current liabilities	$	11,247	$	9,002