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Condensed Consolidated Statement Of Stockholders' Equity (Parenthetical) | 6 Months Ended
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Jun. 30, 2017 $ / shares shares
Statement of Stockholders' Equity [Abstract] |
Issuance of common stock (in shares) | 176,272
Issuance of deferred stock units (in shares) | 63,677
Special cash dividend (in usd per share) | $ / shares | $ 1.00

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