Annual report pursuant to Section 13 and 15(d)

Quarterly Results (Unaudited) (Details)

v3.4.0.3
Quarterly Results (Unaudited) (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
May. 20, 2013
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2014
Quarterly Results [Line Items]                        
Revenues   $ 72,344 $ 74,427 $ 69,934 $ 65,223              
Revenues           $ 74,256 $ 87,622 $ 79,033 $ 67,667 $ 281,928 $ 308,578 $ 277,323
Gross Profit   32,095 35,129 33,354 30,737 34,105 45,533 41,221 33,845 131,315 154,704 135,170
Operating income (loss)   5,541 11,827 11,321 8,072 12,610 23,219 18,472 12,760 $ 36,761 67,061 $ 58,617
Net income (loss)   $ 3,204 $ 8,480 $ 6,896 $ 4,429 $ 10,501 $ 15,603 $ 11,748 $ 11,534   $ 49,386  
Earnings Per Share, Basic and Diluted [Abstract]                        
Basic (in dollars per share)   $ 0.10 $ 0.26 $ 0.21 $ 0.14 $ 0.33 $ 0.49 $ 0.37 $ 0.36 $ 0.72 $ 1.54 $ 0.82
Earnings Per Share, Basic and Diluted           $ 0.32 $ 0.48 $ 0.36 $ 0.36      
Earnings Per Share, Diluted   $ 0.10 $ 0.26 $ 0.21 $ 0.14         $ 0.71 $ 1.52 $ 0.80
Senior secured note [Member]                        
Earnings Per Share, Basic and Diluted [Abstract]                        
Write off of Deferred Debt Issuance Cost $ 4,010