Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Consolidated Statements Of Operations [Abstract]
Service revenues	$ 32,983	$ 32,533	$ 64,877	$ 64,002
Product revenues	6,571	4,549	12,382	9,761
Net revenues	39,554	37,082	77,259	73,763
Costs and expenses:
Service costs	15,195	14,863	30,244	29,171
Product costs	3,150	2,187	6,308	4,442
Total cost of sales	18,345	17,050	36,552	33,613
Selling, general, and administrative	13,735	12,578	28,097	25,969
Acquisition, reorganization and nonrecurring costs	109	300	220	300
Costs and expenses	32,189	29,928	64,869	59,882
Operating income	7,365	7,154	12,390	13,881
Equity in income of joint ventures	535	556	1,108	2,084
Interest expense, net	(975)	(1,081)	(1,867)	(2,114)
Other (loss) income, net	(8)	224	29	319
Income before taxes	6,917	6,853	11,660	14,170
Income taxes	1,954	1,620	3,450	3,894
Net income	4,963	5,233	8,210	10,276
Less: Net (loss) income attributed to noncontrolling interest	(34)	80	162	246
Net income attributed to Landauer, Inc.	$ 4,997	$ 5,153	$ 8,048	$ 10,030
Net income per share attributable to Landauer, Inc. shareholders:
Basic	$ 0.52	$ 0.54	$ 0.84	$ 1.06
Weighted average basic shares outstanding	9,460	9,417	9,441	9,391
Diluted	$ 0.52	$ 0.54	$ 0.84	$ 1.05
Weighted average diluted shares outstanding	9,501	9,462	9,485	9,438