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Note 17 - Quarterly Results of Operations (Unaudited) - Quarterly Results of Operations (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
[1]
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
[2]
Mar. 31, 2015
[3]
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Revenues $ 190,978 $ 164,500 $ 158,832 $ 156,341 $ 208,061 $ 173,512 $ 175,451 $ 167,216 $ 670,651 $ 724,240 $ 718,980
Operating income (loss) 12,267 5,446 7,316 7,418 24,336 14,629 18,774 10,043 32,447 67,782 39,646
Net income $ 5,982 $ 2,869 $ 3,632 $ 4,352 $ 13,230 $ 7,627 $ 11,001 $ 10,227 $ 16,835 $ 42,085 $ 17,808
Basic income per share (in dollars per share) $ 0.33 $ 0.16 $ 0.20 $ 0.21 $ 0.74 $ 0.42 $ 0.60 $ 0.56 $ 0.93 $ 2.32 $ 1.17
Diluted income per share (in dollars per share) $ 0.33 $ 0.16 $ 0.20 $ 0.21 $ 0.72 $ 0.42 $ 0.60 $ 0.56 $ 0.92 $ 2.30 $ 1.15
[1] Adjusted from 10-Q as filed due to implementation of ASU 2016-09.
[2] Includes $3.6 million in return of previously expensed insurance premiums for the commutation of our primary auto liability policy for the period of April 1, 2013, through September 30, 2014.
[3] Includes $4.7 million after tax one-time federal income tax credit.