XML 53 R42.htm IDEA: XBRL DOCUMENT v3.5.0.2
Inventory (Details) - USD ($)
Sep. 30, 2016
Mar. 31, 2016
Non-core inventory [Abstract]    
Raw materials $ 22,185,000 $ 17,394,000
Work-in-process 964,000 135,000
Finished goods 51,776,000 42,982,000
Non-core inventory, gross 74,925,000 60,511,000
Less allowance for excess and obsolete inventory (2,761,000) (2,451,000)
Total 72,164,000 58,060,000
Inventory unreturned 10,228,000 10,520,000
Long-term core inventory [Abstract]    
Used cores held at the Company's facilities 35,760,000 34,405,000
Used cores expected to be returned by customers 16,303,000 10,781,000
Remanufactured cores held in finished goods 26,865,000 24,489,000
Remanufactured cores held at customers' locations 173,665,000 172,600,000
Long-term core inventory - gross 252,593,000 242,275,000
Less allowance for excess and obsolete inventory (1,545,000) (1,175,000)
Total 251,048,000 241,100,000
Long-term core inventory deposits $ 5,569,000 $ 5,569,000