Assets and Liabilities, at Fair Value (Narrative) (Details) $ in Thousands  | 
 Mar. 31, 2017  
USD ($)  
investment 
 | 
 Jun. 30, 2016  
USD ($) 
 | 
|---|---|---|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Number of investments | investment | 2 | |
| Equity and cost method investment | $ 7,946 | $ 7,873 | 
| Contingent Consideration Liability | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Contingent consideration, adjusted balance | $ 1,325 | $ 0 | 
| X | ||||||||||
- Definition Equity Method and Cost Method Investment, Total No definition available. 
  | 
| X | ||||||||||
- Definition Number of Investments No definition available. 
  | 
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
  | 
| X | ||||||||||
- Definition Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
  | 
| X | ||||||||||
- Details 
  |