Earnings (Loss) Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Numerator:
Net income (loss) from continuing operations	$ (13,513)	$ 195	$ (9,129)	$ 1,903
Net income attributable to noncontrolling interests	4	134	4	400
Net income (loss) attributable to Ciber, Inc. from continuing operations	(13,517)	61	(9,133)	1,503
Loss from discontinued operations, net of income tax	(952)	(9,510)	(5,489)	(9,890)
NET LOSS ATTRIBUTABLE TO CIBER, INC.	$ (14,469)	$ (9,449)	$ (14,622)	$ (8,387)
Denominator:
Basic weighted average shares outstanding	75,070	73,276	74,611	73,008
Dilutive effect of employee stock plans (in shares)		371		490
Diluted weighted average shares outstanding	75,070	73,647	74,611	73,498
Basic and diluted earnings (loss) per share attributable to Ciber, Inc.:
Continuing operations (in dollars per share)	$ (0.18)		$ (0.12)	$ 0.02
Discontinued operations (in dollars per share)	$ (0.01)	$ (0.13)	$ (0.08)	$ (0.13)
Basic and diluted loss per share attributable to Ciber, Inc.	$ (0.19)	$ (0.13)	$ (0.20)	$ (0.11)
Anti-dilutive securities omitted from the calculation (in shares)	6,541	8,103	6,088	8,217