Earnings (Loss) Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Numerator:
Net income from continuing operations	$ 2,935	$ 422	$ 4,384	$ 1,708
Net income attributable to noncontrolling interests	146	206		266
Net income attributable to Ciber, Inc. from continuing operations	2,789	216	4,384	1,442
Loss from discontinued operations, net of income tax	(4,555)	(297)	(4,537)	(380)
NET INCOME (LOSS) ATTRIBUTABLE TO CIBER, INC.	$ (1,766)	$ (81)	$ (153)	$ 1,062
Denominator:
Basic weighted average shares outstanding	74,690	73,013	74,381	72,874
Dilutive effect of employee stock plans (in shares)	722	491	630	549
Diluted weighted average shares outstanding	75,412	73,504	75,011	73,423
Basic and diluted earnings (loss) per share attributable to Ciber, Inc.:
Continuing operations (in dollars per share)	$ 0.04		$ 0.06	$ 0.02
Discontinued operations (in dollars per share)	$ (0.06)		$ (0.06)	$ (0.01)
Basic and diluted earnings (loss) per share attributable to Ciber, Inc.	$ (0.02)			$ 0.01
Anti-dilutive securities omitted from the calculation (in shares)	4,855	8,694	5,232	8,274