Business Combinations - Summary of the Purchase Price Allocated to the Intangible Assets (Details) - USD ($) $ in Thousands	Jul. 13, 2018	Jul. 06, 2018	Mar. 16, 2018	Mar. 09, 2018
Laser Control Systems
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired				$ 1,400
Intangible assets acquired, weighted average life (in years)				7 years
Laser Control Systems | Brand
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired				$ 26
Intangible assets acquired, weighted average life (in years)				1 year
Laser Control Systems | Non-competition agreement
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired				$ 29
Intangible assets acquired, weighted average life (in years)				3 years
Laser Control Systems | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired				$ 1,319
Intangible assets acquired, weighted average life (in years)				7 years
Laser Control Systems | Customer relationship
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired				$ 26
Intangible assets acquired, weighted average life (in years)				10 years
Photocore
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired			$ 1,435
Intangible assets acquired, weighted average life (in years)			7 years
Photocore | Brand
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired			$ 22
Intangible assets acquired, weighted average life (in years)			1 year
Photocore | Non-competition agreement
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired			$ 9
Intangible assets acquired, weighted average life (in years)			3 years
Photocore | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired			$ 1,343
Intangible assets acquired, weighted average life (in years)			7 years
Photocore | Customer relationship
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired			$ 61
Intangible assets acquired, weighted average life (in years)			10 years
Lanmark
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired		$ 1,366
Intangible assets acquired, weighted average life (in years)		8 years
Lanmark | Brand
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired		$ 26
Intangible assets acquired, weighted average life (in years)		1 year
Lanmark | Non-competition agreement
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired		$ 0
Intangible assets acquired, weighted average life (in years)		0 years
Lanmark | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired		$ 760
Intangible assets acquired, weighted average life (in years)		7 years
Lanmark | Customer relationship
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired		$ 580
Intangible assets acquired, weighted average life (in years)		10 years
Open Technologies
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 7,821
Intangible assets acquired, weighted average life (in years)	8 years
Open Technologies | Brand
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 103
Intangible assets acquired, weighted average life (in years)	1 year
Open Technologies | Non-competition agreement
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 0
Intangible assets acquired, weighted average life (in years)	0 years
Open Technologies | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 4,441
Intangible assets acquired, weighted average life (in years)	7 years
Open Technologies | Customer relationship
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 3,277
Intangible assets acquired, weighted average life (in years)	10 years