Fair Values of Assets and Liabilities (Details) (USD $) | 3 Months Ended | |
In Thousands, unless otherwise specified | Mar. 31, 2015 | Mar. 31, 2014 | Dec. 31, 2014 |
| item |
Fair Values of Assets and Liabilities | | | |
Restricted cash equivalents | $2,627 | | $2,792 |
Available for sale securities, current | 24,797 | | 23,436 |
Long term investments in available for sale securities | 16,396 | | 19,835 |
Amortized cost of available for sale securities | 38,466 | | 40,974 |
Unrealized gains on available for sale securities | 2,884 | | 2,455 |
Unrealized losses on available for sale securities | 157 | | |
Number of available for sale securities in a loss position less than 12 months | 14 | | |
Fair value of securities which are in loss position for less than 12 months | 3,014 | | |
Number of available for sale securities in a loss position 12 months or longer | 8 | | |
Fair value of securities which are in loss position for greater than 12 months | 1,445 | | |
Gross proceeds from sale of available for sale securities | 2,736 | 4,336 | |
Gross realized gains recorded on sale of available for sale securities | 20 | 324 | |
Gross realized losses recorded on sale of available for sale securities | 0 | 11 | |
Total | | | |
Fair Values of Assets and Liabilities | | | |
Cash equivalents | 4,524 | | 4,632 |
Available for sale securities | 41,193 | | 43,271 |
Total | 45,717 | | 47,903 |
Total | Equity securities | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 8,343 | | 8,230 |
Total | Financial services industry | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 4,131 | | 4,059 |
Total | REIT industry | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 346 | | 330 |
Total | Other | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 3,866 | | 3,841 |
Total | Debt securities | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 32,850 | | 35,041 |
Total | International bond fund | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 2,409 | | 2,385 |
Total | High yield fund | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 2,399 | | 2,352 |
Total | Industrial bonds | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 6,113 | | 6,577 |
Total | Government bonds | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 9,911 | | 11,371 |
Total | Financial bonds | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 2,732 | | 2,704 |
Total | Other | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 9,286 | | 9,652 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | | | |
Fair Values of Assets and Liabilities | | | |
Cash equivalents | 4,524 | | 4,632 |
Available for sale securities | 13,279 | | 13,913 |
Total | 17,803 | | 18,545 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity securities | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 8,343 | | 8,230 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Financial services industry | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 4,131 | | 4,059 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | REIT industry | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 346 | | 330 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 3,866 | | 3,841 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Debt securities | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 4,936 | | 5,683 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Government bonds | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 4,936 | | 5,683 |
Significant Other Observable Inputs (Level 2) | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 27,914 | | 29,358 |
Total | 27,914 | | 29,358 |
Significant Other Observable Inputs (Level 2) | Debt securities | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 27,914 | | 29,358 |
Significant Other Observable Inputs (Level 2) | International bond fund | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 2,409 | | 2,385 |
Significant Other Observable Inputs (Level 2) | High yield fund | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 2,399 | | 2,352 |
Significant Other Observable Inputs (Level 2) | Industrial bonds | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 6,113 | | 6,577 |
Significant Other Observable Inputs (Level 2) | Government bonds | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 4,975 | | 5,688 |
Significant Other Observable Inputs (Level 2) | Financial bonds | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | 2,732 | | 2,704 |
Significant Other Observable Inputs (Level 2) | Other | | | |
Fair Values of Assets and Liabilities | | | |
Available for sale securities | $9,286 | | $9,652 |