Balance Sheet Details - (Tables)

6 Months Ended

Jun. 30, 2015

Balance Sheet Detail [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories

Inventories are comprised of the following:

	June 30, 2015		December 31, 2014
Materials	$	35,091	$	29,092
Work-in-process	20,866		20,424
Finished goods	13,309		13,828
Total inventories	$	69,266	$	63,344

Property, Plant and Equipment [Table Text Block]

Property, Plant and Equipment

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

	June 30, 2015		December 31, 2014
Land and building	$	5,024	$	5,024
Machinery and equipment	21,580		20,277
Furniture and fixtures	3,412		3,387
Computer equipment	6,129		5,819
Leasehold improvements	7,782		7,774
	43,927		42,281
Less: Accumulated depreciation	31,140		29,343
Total property, plant and equipment, net	$	12,787	$	12,938

Schedule of Other Assets [Table Text Block]

Other assets

Other assets is comprised of the following:

	June 30, 2015		December 31, 2014
Deferred income taxes	$	30,348	$	30,348
Other	1,101		1,493
Total other assets	$	31,449	$	31,841

Other Current liabilities [Table Text Block]

Other current liabilities

Other current liabilities is comprised of the following:

	June 30, 2015		December 31, 2014
Litigation accrual	$	3,252	$	3,252
Deferred revenue	6,605		7,045
Contingent consideration - acquisitions	1,299		1,267
Other	6,728		5,624
Total other current liabilities	$	17,884	$	17,188

Other Non-current liabilities [Table Text Block]

Other non-current liabilities

Other non-current liabilities is comprised of the following:

	June 30, 2015		December 31, 2014
Unrecognized tax benefits (including interest)	$	3,226	$	3,178
Contingent consideration - acquisitions	3,305		3,797
Other	3,406		2,626
Total other non-current liabilities	$	9,937	$	9,601