Annual report pursuant to Section 13 and 15(d)

NET INCOME (LOSS) PER SHARE - Net Income (Loss) Per Share (Details)

v3.7.0.1
NET INCOME (LOSS) PER SHARE - Net Income (Loss) Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Sep. 30, 2016
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2015
Earnings Per Share [Abstract]                        
Net income (loss) $ 1,913 $ 5,006 $ 4,072 $ (3,520) $ (52,884) $ (821) $ (11,430) $ (11,260) $ 552 $ 3,645 $ (76,394) $ 17,083
Weighted average shares:                        
Basic                   33,742 32,841 31,833
Dilutive shares from stock plans                   371 0 670
Diluted                   34,113 32,841 32,503
Basic net income (loss) per share (in dollars per share)                   $ 0.11 $ (2.33) $ 0.54
Diluted net income (loss) per share (in dollars per share)                   $ 0.11 $ (2.33) $ 0.53