Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Net service revenues	$ 205,302	$ 190,216
Cost of service revenues	144,105	134,381
Gross profit	61,197	55,835
General and administrative expenses	45,426	42,287
Depreciation and amortization	3,601	2,887
Total operating expenses	49,027	45,174
Operating income	12,170	10,661
Interest income	(22)	(334)
Interest expense	1,216	908
Total interest expense, net	1,194	574
Income before income taxes	10,976	10,087
Income tax expense	2,082	1,429
Net income	$ 8,894	$ 8,658
Net income per common share
Basic income per share	$ 0.57	$ 0.56
Diluted income per share	$ 0.55	$ 0.54
Weighted average number of common shares and potential common shares outstanding:
Basic	15,694	15,519
Diluted	16,069	15,907

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