Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net Income (Loss) Attributable to Parent [Abstract]
Net income (loss) from continuing operations	$ (5,169)	$ 2,935	$ (1,103)	$ 4,384
Net income attributable to noncontrolling interests	10	146	15	0
Net income (loss) attributable to Ciber, Inc. from continuing operations	(5,179)	2,789	(1,118)	4,384
Loss from discontinued operations, net of income tax	(288)	(4,555)	(430)	(4,537)
NET LOSS ATTRIBUTABLE TO CIBER, INC.	$ (5,467)	$ (1,766)	$ (1,548)	$ (153)
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Basic weighted average shares outstanding (in shares)	77,301	74,690	76,877	74,381
Dilutive effect of employee stock plans (in shares)	0	722	0	630
Diluted weighted average shares outstanding (in shares)	77,301	75,412	76,877	75,011
Continuing operations (in dollars per share)	$ (0.07)	$ 0.04	$ (0.01)	$ 0.06
Discontinued operations (in dollars per share)	$ 0.00	$ (0.06)	$ (0.01)	$ (0.06)
Basic and diluted earnings (loss) per share attributable to Ciber, Inc. (in dollars per share)	$ (0.07)	$ (0.02)	$ (0.02)	$ 0.00
Anti-dilutive securities omitted from the calculation (in shares)	3,252	4,855	3,370	5,232