Other Long-Term Liabilities (Narrative) (Details) (USD $)	Jun. 30, 2011	Jun. 30, 2010
Deferred contingent consideration	$ 24,779,000	$ 3,420,000
Amount retained by the Company to secure seller's indemnification obligation		400,000
Accrued post-retirement obligations	3,447,000	3,198,000
Contingent Consideration [Member]
Deferred contingent consideration		33,800,000
U.K. Acquisition [Member]
Deferred contingent consideration	500,000	34,200,000
Amount retained by the Company to secure seller's indemnification obligation		$ 3,500,000