Annual report pursuant to Section 13 and 15(d)

Quarterly Information (Unaudited) (Details)

v3.6.0.2
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, 2016
Dec. 31, 2015
Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]                      
Revenues $ 174,225 $ 180,598 $ 162,628 $ 133,776 $ 173,768 $ 189,142 $ 152,489 $ 115,433 $ 651,227 $ 630,832 $ 593,241
Gross Profit 36,017 38,795 31,856 27,676 30,232 36,293 30,896 19,643 134,344 117,064 116,932
Net (loss) income $ 3,269 $ 5,715 $ 1,994 $ 1,054 $ (1,137) $ 4,178 $ 1,991 $ (4,188) $ 11,997 $ (4,684) $ 10,383
Net (loss) income per share attributable to common shareholders:                      
Basic (in usd per share) $ 0.07 $ 0.12 $ 0.04 $ 0.02 $ (0.02) $ 0.09 $ 0.04 $ (0.09) $ 0.26 $ 0.02 $ 0.22
Diluted (in usd per share) $ 0.07 $ 0.12 $ 0.04 $ 0.02 $ (0.02) $ 0.09 $ 0.04 $ (0.09) $ 0.26 $ 0.02 $ 0.22
Weighted average common shares outstanding:                      
Basic (in shares) 45,811,358 46,360,575 46,719,122 46,742,488 46,556,977 46,517,638 46,493,162 46,408,123 46,409,192 46,494,448 46,161,846
Diluted (in shares) 45,907,120 46,430,163 46,793,350 46,860,344 46,566,977 48,056,359 47,385,412 46,408,123 46,493,477 47,664,895 47,027,755