|
Segment Information (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Mar. 31, 2013
|
Dec. 31, 2012
|
Sep. 30, 2012
|
Jun. 30, 2012
|
Mar. 31, 2012
|
Dec. 31, 2011
|
Sep. 30, 2011
|
Jun. 30, 2011
|
Mar. 31, 2013
|
Mar. 31, 2012
|
Mar. 31, 2011
|
|
| Net sales by product line | |||||||||||
| Net sales | $ 30,905 | $ 25,633 | $ 25,902 | $ 22,533 | $ 20,250 | $ 24,329 | $ 33,595 | $ 25,012 | $ 104,973 | $ 103,186 | $ 74,235 |
|
Heat transfer equipment [Member]
|
|||||||||||
| Net sales by product line | |||||||||||
| Net sales | 43,764 | 27,927 | 28,923 | ||||||||
|
Vacuum equipment [Member]
|
|||||||||||
| Net sales by product line | |||||||||||
| Net sales | 22,891 | 43,635 | 26,227 | ||||||||
|
All other [Member]
|
|||||||||||
| Net sales by product line | |||||||||||
| Net sales | $ 38,318 | $ 31,624 | $ 19,085 | ||||||||