Condensed Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Parking services revenue:
Lease contracts	$ 146,454	$ 124,958	$ 282,269	$ 241,593
Management contracts	88,305	84,931	182,363	174,886
Reimbursed management contract revenue	170,856	164,539	345,137	333,717
Total revenue	405,615	374,428	809,769	750,196
Cost of parking services:
Lease contracts	134,474	111,979	263,167	224,063
Management contracts	53,850	50,016	113,840	109,230
Reimbursed management contract expense	170,856	164,539	345,137	333,717
Total cost of parking services	359,180	326,534	722,144	667,010
Gross profit:
Lease contracts	11,980	12,979	19,102	17,530
Management contracts	34,455	34,915	68,523	65,656
Total gross profit	46,435	47,894	87,625	83,186
General and administrative expenses	24,739	24,996	50,412	51,062
Depreciation and amortization	8,165	7,730	16,099	14,893
Operating income	13,531	15,168	21,114	17,231
Other expenses (income)
Interest expense	3,062	4,811	7,105	9,620
Interest income	(40)	(94)	(100)	(192)
Equity in losses from investment in unconsolidated entity	353		824
Total other expenses (income)	3,375	4,717	7,829	9,428
Income before income taxes	10,156	10,451	13,285	7,803
Income tax provision (benefit)	(385)	4,254	950	(3,184)
Net income	10,541	6,197	12,335	10,987
Less: Net income attributable to noncontrolling interest	784	890	1,236	1,377
Net income attributable to SP Plus Corporation	$ 9,757	$ 5,307	$ 11,099	$ 9,610
Net income per share:
Basic (in dollars per share)	$ 0.44	$ 0.24	$ 0.50	$ 0.44
Diluted (in dollars per share)	$ 0.43	$ 0.24	$ 0.49	$ 0.43
Weighted average shares outstanding:
Basic (in shares)	22,145,190	21,991,965	22,136,458	21,984,912
Diluted (in shares)	22,521,832	22,398,886	22,505,403	22,375,377