TopBuild Corp. Quarterly report pursuant to Section 13 or 15(d)

Business Combinations - Fair value of consideration (Details) - USD ($) $ in Thousands					3 Months Ended
	Jan. 18, 2018	Jan. 10, 2018	Feb. 27, 2017	Jan. 16, 2017	Mar. 31, 2018	Mar. 31, 2017
Fair value of consideration
Cash					$ 26,956	$ 41,242
2017 Acquisitions
Fair value of consideration
Cash						41,273
Contingent consideration						2,110
Total consideration transferred						43,383
Midwest
Fair value of consideration
Cash				$ 12,200		12,225
Total consideration transferred						12,225
EcoFoam
Fair value of consideration
Cash			$ 20,200			20,215
Contingent consideration			2,100			2,110
Total consideration transferred			$ 22,300			22,325
All others
Fair value of consideration
Cash						8,833
Total consideration transferred						$ 8,833
2018 Acquisitions
Fair value of consideration
Cash					27,195
Contingent consideration					828
Total consideration transferred					28,023
ADO
Fair value of consideration
Cash		$ 21,600			21,614
Contingent consideration		800			828
Total consideration transferred		$ 22,400			22,442
Santa Rosa
Fair value of consideration
Cash	$ 5,600				5,581
Total consideration transferred					$ 5,581