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Investments - Investment Activity (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Jun. 30, 2014
Schedule of Trading Securities and Available-for-Sale Securities [Line Items]    
Trading, cost [1] $ 16,491 $ 18,067
Trading, gross unrealized gain [1] 68 92
Trading, gross unrealized (losses) [1] (919) (342)
Trading, fair value [1] 15,640 17,817
Available-for-sale, cost [2],[3] 4,602 4,851
Available-for-sale, gross unrealized gains [2],[3] 635 1,425
Available-for-sale, gross unrealized (losses) [2],[3] (974) (80)
Available-for-sale securities, fair value [2],[3] 4,263 6,196
Available-for-sale securities, gross unrealized gain (loss) (339) 1,345
Available-for-sale securities, net unrealized gain (loss) (339) 888
Offshore fund [Member]    
Schedule of Trading Securities and Available-for-Sale Securities [Line Items]    
Trading, cost [1] 1,184 1,184
Trading, gross unrealized gain [1] 0 0
Trading, gross unrealized (losses) [1] (703) (186)
Trading, fair value [1] 481 998
Mutual funds - Fixed income [Member]    
Schedule of Trading Securities and Available-for-Sale Securities [Line Items]    
Trading, cost [1] 14,691 16,241
Trading, gross unrealized gain [1] 68 92
Trading, gross unrealized (losses) [1] (5) 0
Trading, fair value [1] 14,754 16,333
Available-for-sale, cost [3] 1,227 1,228
Available-for-sale, gross unrealized gains [3] 9 21
Available-for-sale, gross unrealized (losses) [3] (22) (2)
Available-for-sale securities, fair value [3] 1,214 1,247
Mutual funds - Domestic equity [Member]    
Schedule of Trading Securities and Available-for-Sale Securities [Line Items]    
Trading, cost [1] 535 535
Trading, gross unrealized gain [1] 0 0
Trading, gross unrealized (losses) [1] (130) (76)
Trading, fair value [1] 405 459
Available-for-sale, cost [3] 543 543
Available-for-sale, gross unrealized gains [3] 0 7
Available-for-sale, gross unrealized (losses) [3] (80) 0
Available-for-sale securities, fair value [3] 463 550
Common stock - Domestic [Member]    
Schedule of Trading Securities and Available-for-Sale Securities [Line Items]    
Available-for-sale, cost [3] 535 535
Available-for-sale, gross unrealized gains [3] 316 586
Available-for-sale, gross unrealized (losses) [3] (9) (3)
Available-for-sale securities, fair value [3] 842 1,118
Common stock - International [Member]    
Schedule of Trading Securities and Available-for-Sale Securities [Line Items]    
Available-for-sale, cost [3] 695 607
Available-for-sale, gross unrealized gains [3] 309 802
Available-for-sale, gross unrealized (losses) [3] (39) 0
Available-for-sale securities, fair value [3] 965 1,409
Corporate debt [Member]    
Schedule of Trading Securities and Available-for-Sale Securities [Line Items]    
Available-for-sale, cost [3] 1,433 1,706
Available-for-sale, gross unrealized gains [3] 0 0
Available-for-sale, gross unrealized (losses) [3] (817) (74)
Available-for-sale securities, fair value [3] 616 1,632
Other [Member]    
Schedule of Trading Securities and Available-for-Sale Securities [Line Items]    
Trading, cost [1] 81 107
Trading, gross unrealized gain [1] 0 0
Trading, gross unrealized (losses) [1] (81) (80)
Trading, fair value [1] 0 27
Available-for-sale, cost [3] 169 232
Available-for-sale, gross unrealized gains [3] 1 9
Available-for-sale, gross unrealized (losses) [3] (7) (1)
Available-for-sale securities, fair value [3] $ 163 $ 240
[1] Unrealized and realized gains and losses on trading securities are included in earnings in the statement of operations.
[2] Net unrealized gains (losses) on available-for-sale securities gross and net of tax as of June 30, 2015, are $(339) and $(339), respectively, and as of June 30, 2014, are $1,345 and $888, 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.