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Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parentheticals) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2017 | Mar. 31, 2016
AOCI Attributable to Parent [Member] |  |
Other comprehensive income (loss), tax | $ 580 | $ 1,800
Other comprehensive income (loss), tax | $ 580 | $ 1,800

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