Significant Accounting Policies - Additional Information (Detail) In Thousands, unless otherwise specified	1 Months Ended
Aug. 25, 2011	Jun. 30, 2012 USD ($)	Jun. 30, 2012 CAD
Summary Of Significant Accounting Policies [Line Items]
Reverse stock split conversion ratio	18
Money market investments		$ 3,473
Cash		$ 113	4

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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