|
Variable Interest Entities (Details) (USD $)
|
Apr. 30, 2013
|
Jan. 31, 2013
|
Apr. 30, 2012
|
Jan. 31, 2012
|
|---|---|---|---|---|
| Condensed consolidated balance sheets related to consolidated VIEs | ||||
| Cash and cash equivalents | $ 169,387,000 | $ 175,142,000 | $ 175,309,000 | $ 156,524,000 |
| Property, plant and equipment | 3,248,000 | 5,309,000 | ||
| TOTAL ASSETS | 225,586,000 | 234,724,000 | 224,689,000 | |
| Accounts payable | 28,474,000 | 32,699,000 | ||
| Accrued expenses | 9,075,000 | 9,488,000 | ||
| TOTAL LIABILITIES | 99,042,000 | 115,556,000 | ||
|
Variable interest entity, primary beneficiary [Member]
|
||||
| Condensed consolidated balance sheets related to consolidated VIEs | ||||
| Cash and cash equivalents | 278,000 | 190,000 | ||
| Property, plant and equipment | 3,248,000 | 5,309,000 | ||
| TOTAL ASSETS | 3,526,000 | 5,499,000 | ||
| Accounts payable | 208,000 | 334,000 | ||
| Accrued expenses | 365,000 | 747,000 | ||
| TOTAL LIABILITIES | $ 573,000 | $ 1,081,000 |