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Investment Securities (Details 2) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Current $ 49,475 $ 41,233 [1]
Long-term investment securities 57,162 0
Available-for-sale Securities $ 106,637 $ 41,233
[1] December 31, 2015 balances were derived from audited consolidated financial statements.