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Treasury Stock	6 Months Ended
Treasury Stock	Jun. 30, 2017
Equity [Abstract]
Treasury Stock	Treasury Stock Common stock held in treasury totaled 644,091 and 354,889 with a cost of $1,472 and $1,214 at June 30, 2017 and December 31, 2016, respectively. These shares were withheld from employees to settle personal tax withholding obligations that arose as a result of restricted stock units that have vested in the periods presented.