Annual report pursuant to Section 13 and 15(d)

Quarterly Information (Unaudited) (Details)

v3.3.1.900
Quarterly Information (Unaudited) (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]                      
Revenues $ 173,768 $ 189,142 $ 152,489 $ 115,433 $ 181,061 $ 168,891 $ 142,558 $ 100,731 $ 630,832 $ 593,241 $ 574,171
Gross Profit $ 30,232 $ 36,293 $ 30,896 $ 19,643 36,418 35,024 27,936 17,554 117,064 116,932 103,325
Net (loss) income         $ 8,654 $ 7,291 $ 2,719 $ (8,281) $ (2,551) $ 10,383 $ 2,414
Net (loss) income per share attributable to common shareholders:                      
Basic (in usd per share) $ 0.02 $ 0.09 $ 0.04 $ (0.09) $ 0.19 $ 0.16 $ 0.06 $ (0.18) $ 0.06 $ 0.22 $ 0.05
Diluted (in usd per share) $ 0.02 $ 0.09 $ 0.04 $ (0.09) $ 0.18 $ 0.15 $ 0.06 $ (0.18) $ 0.06 $ 0.22 $ 0.05
Weighted average common shares outstanding:                      
Basic (in shares) 46,556,977 46,517,638 46,493,162 46,408,123 46,350,835 46,315,968 46,064,049 45,909,995 46,494,448 46,161,846 45,560,078
Diluted (in shares) 48,011,302 48,056,359 47,385,412 46,408,123 47,326,417 47,308,414 46,904,199 45,909,995 47,664,895 47,027,755 46,685,125