Income (Loss) Per Common Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income (Loss) Per Common Share [Abstract]
Net (loss) income attributed to Landauer, Inc.	$ (13,753)	$ 6,566	$ (3,723)	$ 18,601
Less: Income allocated to unvested restricted stock	0	34	0	101
Net (loss) income available to common stockholder	$ (13,753)	$ 6,532	$ (3,723)	$ 18,500
Basic weighted averages shares outstanding	9,439	9,371	9,402	9,357
Net (loss) income per share - Basic	$ (1.46)	$ 0.70	$ (0.40)	$ 1.98
Effect of dilutive securities	0	41	0	40
Diluted weighted averages shares outstanding	9,439	9,412	9,402	9,397
Net (loss) income per share - Diluted	$ (1.46)	$ 0.69	$ (0.40)	$ 1.97