CASH, CASH EQUIVALENTS AND INVESTMENTS (Policies)	3 Months Ended
Jun. 30, 2012
CASH, CASH EQUIVALENTS AND INVESTMENTS [Abstract]
Cash, Cash Equivalents and Investments	The Company considers all highly liquid debt instruments purchased with an original maturity of three months or less to be cash equivalents. The Company classifies its remaining investments as available-for-sale. These securities are carried at fair market value, with unrealized gains and losses reported in shareholders' equity. Gains or losses on securities sold are based on the specific identification method.

Disclosure of accounting policy for cash and cash equivalents, including the policy for determining which items are treated as cash equivalents. Disclosure of accounting policy for short-term investments that are classified as available-for-sale.

No definition available.

Name:	panl_CashCashEquivalentsAndShortTermInvestmentsPolicyTextBlock
Namespace Prefix:	panl_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration