Related Party Transactions (Schedule Of Related Party Transactions) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Sep. 30, 2014
Aquila [Member]
Related Party Transaction [Line Items]
Sales to related party	$ 1,743	$ 2,076
Purchases from related party	8
Amounts in accounts receivable	1,812		3,799
Amounts in accounts payable			227
Nagase-Landauer, Ltd. [Member]
Related Party Transaction [Line Items]
Sales to related party	30	169
Purchases from related party	266	857
Amounts in accounts receivable	11		27
Amounts in accounts payable	$ 41		$ 60

For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

+ References+ Details

Carrying amount as of the balance sheet date of obligations due all related parties.

+ References+ Details

- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

+ References+ Details