Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Revenues	$ 252,202	$ 212,413
Cost of revenues	205,293	173,967
Gross profit	46,909	38,446
Selling, general and administrative expenses	28,601	28,924
Operating income	18,308	9,522
Other expenses, net	3,672	5,389
Income before income taxes	14,636	4,133
Income tax provision (benefit)	2,205	(2,503)
Net income	12,431	6,636
Net income attributable to redeemable non-controlling interests	(1,257)	(435)
Net income attributable to common shareholders	$ 11,174	$ 6,201
Net income per share attributable to common shareholders:
Basic (in usd per share)	$ 0.23	$ 0.13
Diluted (in usd per share)	$ 0.22	$ 0.13
Weighted average common shares outstanding:
Basic (in shares)	48,975	47,384
Diluted (in shares)	50,357	48,497

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 924
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(a),(d))
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227