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Earnings Per Share - (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 1 4 13 78
Stock Options Antidilutive securities excluded from computation 0 4 0 78
Restricted Stock Unit Antidilutive excluded from computation 1 0 13 0
Net Income (Loss) Attributable to Parent $ 9,193 $ 7,601 $ 16,344 $ 21,540
Weighted Average Number of Shares Outstanding, Basic 31,501 30,779 31,397 30,869
Weighted Average Number Diluted Shares Outstanding Adjustment 645 563 704 630
Dilutive Securities, Effect on Basic Earnings Per Share $ 0 $ 412 $ 0 $ 206
Warrant Dilutive Shares $ 0 $ 0 $ 3 $ 0
Weighted Average Number of Shares Outstanding, Diluted 32,146 31,754 32,104 31,705
Earnings (Loss) Per Share, Basic $ 0.29 $ 0.25 $ 0.52 $ 0.70
Earnings (Loss) Per Share, Diluted $ 0.29 $ 0.24 $ 0.51 $ 0.68