Assets (Tables)

3 Months Ended

Mar. 31, 2019

Assets

Schedule of portion of Veeco's assets (excluding cash balances) that are measured at fair value on a recurring basis

	Level 1		Level 2		Level 3		Total
	(in thousands)
March 31, 2019
Cash equivalents
Certificate of deposits and time deposits	$	66,863	$	—	$	—	$	66,863
U.S. treasuries		19,917		—		—		19,917
Commercial paper		—		11,257		—		11,257
Total	$	86,780	$	11,257	$	—	$	98,037
Short-term investments
U.S. treasuries	$	51,726	$	—	$	—	$	51,726
Government agency securities		—		4,964		—		4,964
Corporate debt		—		1,999		—		1,999
Commercial paper		—		8,526		—		8,526
Total	$	51,726	$	15,489	$	—	$	67,215
December 31, 2018
Cash equivalents
Certificate of deposits and time deposits	$	65,571	$	—	$	—	$	65,571
U.S. treasuries		3,990		—		—		3,990
Total	$	69,561	$	—	$	—	$	69,561
Short-term investments
U.S. treasuries	$	37,184	$	—	$	—	$	37,184
Corporate debt		—		8,516		—		8,516
Commercial paper		—		2,489		—		2,489
Total	$	37,184	$	11,005	$	—	$	48,189

Trading Securities And Certain Trading Asset [Table Text Block]

			Gross		Gross
	Amortized		Unrealized		Unrealized		Estimated
	Cost		Gains		Losses		Fair Value
	(in thousands)
March 31, 2019
U.S. treasuries	$	51,715	$	11	$	—	$	51,726
Government agency securities		4,964		—		—		4,964
Corporate debt		1,999		—		—		1,999
Commercial paper		8,526		—		—		8,526
Total	$	67,204	$	11	$	—	$	67,215
December 31, 2018
U.S. treasuries	$	37,191	$	—	$	(7)	$	37,184
Corporate debt		8,525		—		(9)		8,516
Commercial paper		2,489		—		—		2,489
Total	$	48,205	$	—	$	(16)	$	48,189

Schedule of fair value and unrealized losses of available-for-sale securities in a loss position

	December 31, 2018
			Gross
	Estimated		Unrealized
	Fair Value		Losses
	(in thousands)
U.S. treasuries	$	37,184	$	(7)
Corporate debt		8,516		(9)
Total	$	45,700	$	(16)

Schedule of inventories

	March 31,		December 31,
	2019		2018
	(in thousands)
Materials	$	84,711	$	90,816
Work-in-process		36,299		42,354
Finished goods		27,093		23,141
Total	$	148,103	$	156,311

Schedule of property, plant, and equipment

	March 31,		December 31,
	2019		2018
	(in thousands)
Land	$	5,669	$	5,669
Building and improvements		61,286		61,124
Machinery and equipment (1)		129,864		128,385
Leasehold improvements		7,041		9,033
Gross property, plant, and equipment		203,860		204,211
Less: accumulated depreciation and amortization		126,123		123,927
Net property, plant, and equipment	$	77,737	$	80,284

⁽¹⁾ Machinery and equipment also includes software, furniture and fixtures

Schedule of intangible assets excluding goodwill

	March 31, 2019						December 31, 2018
			Accumulated						Accumulated
	Gross		Amortization				Gross		Amortization
	Carrying		and		Net		Carrying		and		Net
	Amount		Impairment		Amount		Amount		Impairment		Amount
	(in thousands)
Technology	$	337,218	$	293,528	$	43,690	$	337,218	$	290,808	$	46,410
Customer relationships		164,595		137,257		27,338		164,595		136,126		28,469
In-process R&D		13,710		10,530		3,180		13,710		10,530		3,180
Trademarks and tradenames		30,910		24,239		6,671		30,910		23,899		7,011
Other		3,686		3,634		52		3,686		3,607		79
Total	$	550,119	$	469,188	$	80,931	$	550,119	$	464,970	$	85,149