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Stockholders' Equity (Tables)
3 Months Ended
Mar. 31, 2015
Equity [Abstract]  
Dividends Declared
Presented below is a summary of cash dividends paid to common shareholders, recorded as a reduction of retained earnings.
 
Three months ended
(in thousands, except per share data; unaudited)
March 31, 2015
March 31, 2014
Cash dividends to common stockholders
$
1,307

$
1,120

Cash dividends per common share
$
0.22

$
0.19