Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details)

v3.3.0.814
Fair Value Measurements (Details) - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Fair value    
Investments available-for-sale $ 1,786 $ 2,546
Municipal obligations    
Fair value    
Investments available-for-sale   101
U.S. government security funds    
Fair value    
Investments available-for-sale 1,786 1,776
Equity securities    
Fair value    
Investments available-for-sale   669
Recurring basis | Total    
Fair value    
Trading investment securities 992 1,038
Total assets measured at fair value on a recurring basis 2,778 3,584
Recurring basis | Municipal obligations | Total    
Fair value    
Investments available-for-sale   101
Recurring basis | U.S. government security funds | Total    
Fair value    
Investments available-for-sale 1,786 1,776
Recurring basis | Equity securities | Total    
Fair value    
Investments available-for-sale   669
Recurring basis | Level 1 - Quoted Prices in Active Markets for Identical Assets    
Fair value    
Trading investment securities 992 1,038
Total assets measured at fair value on a recurring basis 2,778 3,483
Recurring basis | Level 1 - Quoted Prices in Active Markets for Identical Assets | U.S. government security funds    
Fair value    
Investments available-for-sale $ 1,786 1,776
Recurring basis | Level 1 - Quoted Prices in Active Markets for Identical Assets | Equity securities    
Fair value    
Investments available-for-sale   669
Recurring basis | Level 2 - Significant Other Observable Inputs    
Fair value    
Total assets measured at fair value on a recurring basis   101
Recurring basis | Level 2 - Significant Other Observable Inputs | Municipal obligations    
Fair value    
Investments available-for-sale   $ 101