Annual report pursuant to Section 13 and 15(d)

Segment Information - Net Sales by Product Line (Detail)

v3.6.0.2
Segment Information - Net Sales by Product Line (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2014
Segment Reporting Information [Line Items]                      
Net sales $ 22,301 $ 17,323 $ 22,798 $ 27,617 $ 37,455 $ 33,646 $ 35,566 $ 28,502 $ 90,039 $ 135,169 $ 102,218
Heat transfer equipment [Member]                      
Segment Reporting Information [Line Items]                      
Net sales                 31,479 58,224 37,086
Vacuum equipment [Member]                      
Segment Reporting Information [Line Items]                      
Net sales                 28,323 28,698 27,236
All other [Member]                      
Segment Reporting Information [Line Items]                      
Net sales                 $ 30,237 $ 48,247 $ 37,896