Business Combinations - Summary of the Purchase Price Allocated to the Intangible Assets (Details) - USD ($) $ in Thousands	1 Months Ended
	Apr. 30, 2017	Dec. 31, 2016	Aug. 31, 2016	Jul. 31, 2016
BuildIT
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired				$ 1,015
Intangible assets acquired, weighted average life (in years)				7 years
BuildIT | Trade name
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired				$ 346
Intangible assets acquired, weighted average life (in years)				7 years
BuildIT | Non-competition agreement
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired				$ 31
Intangible assets acquired, weighted average life (in years)				5 years
BuildIT | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired				$ 361
Intangible assets acquired, weighted average life (in years)				7 years
BuildIT | Customer relationship
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired				$ 277
Intangible assets acquired, weighted average life (in years)				7 years
BuildIT | Favorable in-place lease
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired				$ 0
Intangible assets acquired, weighted average life (in years)				0 years
LPT
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired			$ 5,474
Intangible assets acquired, weighted average life (in years)			7 years
LPT | Trade name
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired			$ 64
Intangible assets acquired, weighted average life (in years)			1 year
LPT | Non-competition agreement
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired			$ 0
Intangible assets acquired, weighted average life (in years)			0 years
LPT | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired			$ 4,260
Intangible assets acquired, weighted average life (in years)			7 years
LPT | Customer relationship
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired			$ 1,150
Intangible assets acquired, weighted average life (in years)			7 years
LPT | Favorable in-place lease
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired			$ 0
Intangible assets acquired, weighted average life (in years)			0 years
MWF
Acquired Finite-Lived Intangible Assets [Line Items]
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]
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]
Intangible assets acquired		$ 3
Intangible assets acquired, weighted average life (in years)		2 years
MWF | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired		$ 951
Intangible assets acquired, weighted average life (in years)		5 years
MWF | Customer relationship
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired		$ 826
Intangible assets acquired, weighted average life (in years)		5 years
MWF | Favorable in-place lease
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired		$ 0
Intangible assets acquired, weighted average life (in years)		0 years
Nutfield
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 2,329
Intangible assets acquired, weighted average life (in years)	10 years
Nutfield | Trade name
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 29
Intangible assets acquired, weighted average life (in years)	1 year
Nutfield | Non-competition agreement
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 144
Intangible assets acquired, weighted average life (in years)	5 years
Nutfield | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 1,970
Intangible assets acquired, weighted average life (in years)	10 years
Nutfield | Customer relationship
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 95
Intangible assets acquired, weighted average life (in years)	10 years
Nutfield | Favorable in-place lease
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 91
Intangible assets acquired, weighted average life (in years)	12 years