|
Segment Information - Net Sales by Product Line (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Mar. 31, 2014
|
Dec. 31, 2013
|
Sep. 30, 2013
|
Jun. 30, 2013
|
Mar. 31, 2013
|
Dec. 31, 2012
|
Sep. 30, 2012
|
Jun. 30, 2012
|
Mar. 31, 2014
|
Mar. 31, 2013
|
Mar. 31, 2012
|
|
| Segment Reporting Information [Line Items] | |||||||||||
| Net sales | $ 26,087 | $ 23,385 | $ 24,490 | $ 28,256 | $ 30,905 | $ 25,633 | $ 25,902 | $ 22,533 | $ 102,218 | $ 104,973 | $ 103,186 |
|
Heat transfer equipment [Member]
|
|||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Net sales | 37,086 | 43,764 | 27,927 | ||||||||
|
Vacuum equipment [Member]
|
|||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Net sales | 27,236 | 22,891 | 43,635 | ||||||||
|
All other [Member]
|
|||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Net sales | $ 37,896 | $ 38,318 | $ 31,624 | ||||||||