Company Operations and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Inventories consisted of the following, net of reserves of $0.7 million at December 31, 2016 and 2015 (in thousands):



	December 31,
	2016		2015
Raw materials	$	9,297	$	10,289
Work-in-process (materials, labor and overhead)	7,990		7,441
Finished goods (materials, labor and overhead)	8,758		8,658
Total inventories	$	26,045	$	26,388

Property, Plant and Equipment

Property, plant and equipment consisted of the following (in thousands):



	December 31,
	2016			2015
Equipment, furniture and fixtures	$	61,972		$	59,736
Building and improvements	34,243			33,048
Leased instruments	24,014			18,280
Land	1,080			1,080
Total property, plant and equipment, gross	121,309			112,144
Less: accumulated depreciation and amortization	(70,451		)	(59,597		)
Total property, plant and equipment, net	$	50,858		$	52,547

Summary of Intangible Assets

oodwill of $83.8 million as of December 31, 2016 and $80.7 million as of December 31, 2015. Intangible assets consisted of the following (dollar amounts in thousands):



		December 31, 2016							December 31, 2015
Description	Weighted-average useful life (years)	Gross assets		Accumulated amortization			Net		Gross assets		Accumulated amortization			Net
Purchased technology	8.4	53,600		(41,369		)	12,231		52,560		(34,911		)	17,649
Customer relationships	7.6	7,157		(5,928		)	1,229		7,171		(4,972		)	2,199
License agreements	10.4	6,009		(3,222		)	2,787		5,512		(2,542		)	2,970
Patent and trademark costs	12.0	11,240		(3,522		)	7,718		10,530		(2,588		)	7,942
Software development costs	5	6,000		(2,326		)	3,674		2,913		(1,840		)	1,073
Total intangible assets		$	84,006	$	(56,367	)	$	27,639	$	78,686	$	(46,853	)	$	31,833

Summary of Expected Future Annual Amortization Expense

The expected future annual amortization expense of the Company’s intangible assets is as follows (in thousands):



For the years ending December 31,	Amortization expense
2017	$	9,822
2018	4,332
2019	3,079
2020	2,700
2021	2,582
Thereafter	5,124
Total	$	27,639

Schedule of Other Current Liabilities

Other current liabilities—Other current liabilities consisted of the following (in thousands):



	December 31,
	2016		2015
Customer incentives	$	3,766	$	4,030
Accrued interest	227		202
Other	1,006		2,767
Total other current liabilities	$	4,999	$	6,999