Equity In Joint Vetures (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Schedule of Equity Method Investments [Line Items]
Revenues	$ 60,523	$ 34,937	$ 26,663
Gross profit	24,289	19,796	15,125
Net income	7,810	6,374	4,382
Current assets	27,580	27,738
Other assets	41,292	44,404
Current liabilities	13,514	19,580
Other liabilities	$ 2,354	$ 3,727
Nagase-Landauer, Ltd [Member]
Schedule of Equity Method Investments [Line Items]
Equity percentage in joint venture	50.00%
Epsilon Landauer Dozimetri [Member]
Schedule of Equity Method Investments [Line Items]
Equity percentage in joint venture	50.00%
Yamasato, Fujiwara, Higa and Associates, Inc [Member]
Schedule of Equity Method Investments [Line Items]
Equity percentage in joint venture	49.00%