Annual report pursuant to Section 13 and 15(d)

LEEVAC Transaction - Pro Forma Results (Details)

v3.8.0.1
LEEVAC Transaction - Pro Forma Results (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]                      
Revenue $ 37,277 $ 49,884 $ 45,868 $ 37,993 $ 55,461 $ 65,384 $ 81,502 $ 83,979 $ 171,022 $ 286,326 $ 306,120
Net income (loss) $ (24,279) $ (3,110) $ (10,923) $ (6,454) $ (3,555) $ 541 $ 5,540 $ 989 $ (44,766) $ 3,515 (25,364)
Pro forma revenue                     393,359
Pro forma net income (loss)                     (26,281)
Pro Forma Adjustment to Historical Results                      
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]                      
Revenue                     0
Net income (loss)                     3,738
Effect of purchase price depreciation                      
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]                      
Net income (loss)                     1,217
Elimination of interest expense                      
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]                      
Net income (loss)                     2,038
Income taxes                      
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]                      
Net income (loss)                     483
LEEVAC                      
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]                      
Revenue                     87,239
Net income (loss)                     $ (4,655)