Condensed Financial Information (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended	3 Months Ended	9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2003	Mar. 31, 2013 Kelko (Venezuela) [Member]	Sep. 30, 2013 Kelko (Venezuela) [Member]
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Revenue Recognized Under Net Reporting Arrangements			$ 30,288	$ 30,878
Other Income	2,057
Interest Income, Other	483
Other Expense					2,000
Provision for Doubtful Accounts		1,156
CFO Transition Costs		609
Schedule of Equity Method Investments [Line Items]
Inflationary Percentage							100.00%
Description Of Foreign Currency Devaluation Effects							On January 8, 2010, the Venezuelan government announced the devaluation of the Bolivar Fuerte and the establishment of a two-tiered exchange structure. In February 2013, the Venezuelan Government announced a further devaluation of the Bolivar Fuerte. Accordingly, the Company recorded a charge of approximately $357, or $0.03 per diluted share, in equity in net income of associated companies on the Company’s Condensed Consolidated Statement of Income during the first quarter of 2013.
Equity Method Investment, Ownership Percentage							50.00%
Effect Of Currency Devaluation, Amount						$ 357
Effect Of Currency Devaluation, Per Diluted Share						$ 0.03