Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Consolidated Statements Of Income [Abstract]
Net revenues	$ 152,400	$ 120,458	$ 114,367
Costs and expenses:
Cost of sales	65,392	47,510	44,478
Selling, general, and administrative	51,096	36,576	33,224
Acquisition and reorganization costs	4,299	1,489	2,028
Abandonment charges	3,443	0	0
Costs and expenses	124,230	85,575	79,730
Operating income	28,170	34,883	34,637
Equity in income of joint ventures	3,181	2,191	1,501
Interest expense, net	(3,308)	(270)	(120)
Other income (expense), net	97	(69)	15
Income before taxes	28,140	36,735	36,033
Income taxes	8,040	11,527	11,893
Net income	20,100	25,208	24,140
Less: Net income attributed to noncontrolling interest	830	670	466
Net income attributed to Landauer, Inc.	$ 19,270	$ 24,538	$ 23,674
Net income per share attributed to Landauer, Inc. shareholders:
Basic	$ 2.04	$ 2.60	$ 2.53
Weighted average basic shares outstanding	9,389	9,395	9,310
Diluted	$ 2.03	$ 2.58	$ 2.52
Weighted average diluted shares outstanding	9,437	9,477	9,349