Investments - Fair Value Measurements on Recurring Basis (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value	$ 17,817	[1]	$ 4,758	[1]
Total available-for-sale securities	6,196	[2],[3]	9,053	[2],[3]
Total Investments	24,013		13,811
Common stock - Domestic [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	1,118	[3]	579	[3]
Common stock - International [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	1,409	[3]	815	[3]
Offshore fund [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value	998	[1]	786	[1]
Total available-for-sale securities			4,712	[3]
Mutual funds - International equity [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value			360	[1]
Corporate debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	1,632	[3]
Mutual funds - Fixed income [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value	16,333	[1]	3,191	[1]
Total available-for-sale securities	1,247	[3]	1,004	[3]
Mutual funds - Domestic equity [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value	459	[1]	399	[1]
Total available-for-sale securities	550	[3]	1,766	[3]
Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value	27	[1]	22	[1]
Total available-for-sale securities	240	[3]	177	[3]
Quoted Prices (Level 1) [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value	16,819		3,972
Total available-for-sale securities	4,853		4,083
Total Investments	21,672		8,055
Quoted Prices (Level 1) [Member] | Common stock - Domestic [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	1,118		579
Quoted Prices (Level 1) [Member] | Common stock - International [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	1,406		720
Quoted Prices (Level 1) [Member] | Offshore fund [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value	0		0
Total available-for-sale securities			0
Quoted Prices (Level 1) [Member] | Mutual funds - International equity [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value			360
Quoted Prices (Level 1) [Member] | Corporate debt [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	292
Quoted Prices (Level 1) [Member] | Mutual funds - Fixed income [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value	16,333		3,191
Total available-for-sale securities	1,247		1,004
Quoted Prices (Level 1) [Member] | Mutual funds - Domestic equity [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value	459		399
Total available-for-sale securities	550		1,766
Quoted Prices (Level 1) [Member] | Other [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value	27		22
Total available-for-sale securities	240		14
Significant Other Inputs (Level 2) [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value	998		786
Total available-for-sale securities	1,093		4,712
Total Investments	2,091		5,498
Significant Other Inputs (Level 2) [Member] | Common stock - Domestic [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	0		0
Significant Other Inputs (Level 2) [Member] | Common stock - International [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	3		0
Significant Other Inputs (Level 2) [Member] | Offshore fund [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value	998		786
Total available-for-sale securities			4,712
Significant Other Inputs (Level 2) [Member] | Mutual funds - International equity [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value			0
Significant Other Inputs (Level 2) [Member] | Corporate debt [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	1,090
Significant Other Inputs (Level 2) [Member] | Mutual funds - Fixed income [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value	0		0
Total available-for-sale securities	0		0
Significant Other Inputs (Level 2) [Member] | Mutual funds - Domestic equity [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value	0		0
Total available-for-sale securities	0		0
Significant Other Inputs (Level 2) [Member] | Other [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value	0		0
Total available-for-sale securities	0		0
Significant Unobservable Inputs (Level 3) [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value	0		0
Total available-for-sale securities	250		258
Total Investments	250		258
Significant Unobservable Inputs (Level 3) [Member] | Common stock - Domestic [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	0		0
Significant Unobservable Inputs (Level 3) [Member] | Common stock - International [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	0		95
Significant Unobservable Inputs (Level 3) [Member] | Offshore fund [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value	0		0
Total available-for-sale securities			0
Significant Unobservable Inputs (Level 3) [Member] | Mutual funds - International equity [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value			0
Significant Unobservable Inputs (Level 3) [Member] | Corporate debt [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	250
Significant Unobservable Inputs (Level 3) [Member] | Mutual funds - Fixed income [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value	0		0
Total available-for-sale securities	0		0
Significant Unobservable Inputs (Level 3) [Member] | Mutual funds - Domestic equity [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value	0		0
Total available-for-sale securities	0		0
Significant Unobservable Inputs (Level 3) [Member] | Other [Member] | Recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities, at fair value	0		0
Total available-for-sale securities	0		163
Available-for-sale Securities [Member] | Significant Other Inputs (Level 2) [Member] | Corporate debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities			$ 1,100

[1] Unrealized and realized gains and losses on trading securities are included in earnings in the statement of operations.

[2] Net unrealized gains on available-for-sale securities gross and net of tax as of June 30, 2014, are $1,345 and $888, respectively, and as of June 30, 2013, are $988 and $652, respectively.

[3] Unrealized gains and losses on available-for-sale securities are excluded from earnings and recorded in other comprehensive income (loss) as a separate component of shareholders’ equity until realized.