Business Combinations Business Combination - Summary of the Purchase Price Allocated to the Intangible Assets (Details) - USD ($) $ in Thousands	1 Months Ended
	Dec. 31, 2016	Aug. 31, 2016	Jul. 31, 2016
BuildIT Software and Solutions Ltd.
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired			$ 1,015
Intangible assets acquired, weighted average life (in years)			7 years
BuildIT Software and Solutions Ltd. | Trade name
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired			$ 346
Intangible assets acquired, weighted average life (in years)			7 years
BuildIT Software and Solutions Ltd. | Non-competition agreement
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired			$ 31
Intangible assets acquired, weighted average life (in years)			5 years
BuildIT Software and Solutions Ltd. | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired			$ 361
Intangible assets acquired, weighted average life (in years)			7 years
BuildIT Software and Solutions Ltd. | Customer relationship
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired			$ 277
Intangible assets acquired, weighted average life (in years)			7 years
Laser Projection Technologies
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired		$ 5,474
Intangible assets acquired, weighted average life (in years)		7 years
Laser Projection Technologies | Trade name
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired		$ 64
Intangible assets acquired, weighted average life (in years)		1 year
Laser Projection Technologies | Non-competition agreement
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired		$ 0
Intangible assets acquired, weighted average life (in years)		0 years
Laser Projection Technologies | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired		$ 4,260
Intangible assets acquired, weighted average life (in years)		7 years
Laser Projection Technologies | Customer relationship
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired		$ 1,150
Intangible assets acquired, weighted average life (in years)		7 years
MWF
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 1,816
Intangible assets acquired, weighted average life (in years)	5 years
MWF | Trade name
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 36
Intangible assets acquired, weighted average life (in years)	1 year
MWF | Non-competition agreement
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 3
Intangible assets acquired, weighted average life (in years)	2 years
MWF | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 951
Intangible assets acquired, weighted average life (in years)	5 years
MWF | Customer relationship
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 826
Intangible assets acquired, weighted average life (in years)	5 years