UPDATES TO CRITICAL ACCOUNTING POLICIES AND ESTIMATES (Policies)	9 Months Ended
	Feb. 28, 2015
Inventories	Inventories: Our worldwide inventories are stated at the lower of cost or market, generally using a weighted-average cost method. Our inventories include approximately $31.1 million of finished goods and $4.8 million of raw materials and work-in-progress as of February 28, 2015, as compared to approximately $30.9 million of finished goods and $3.0 million of raw materials and work-in-progress as of May 31, 2014. At this time, we do not anticipate any material risks or uncertainties related to possible future inventory write-downs.
Revenue Recognition	Revenue Recognition: Our product sales are recognized as revenue upon shipment, when title passes to the customer, when delivery has occurred or services have been rendered, and when collectability is reasonably assured. We also record estimated discounts and returns based on our historical experience.
Loss Contingencies	Loss Contingencies: We accrue a liability for loss contingencies when it is probable that a liability has been incurred and the amount can be reasonably estimated. When only a range of possible loss can be established, the most probable amount in the range is accrued. If no amount within this range is a better estimate than any other amount within the range, the minimum amount in the range is accrued. If we determine that there is at least a reasonable possibility that a loss may have been incurred, we will include a disclosure describing the contingency.
Goodwill and Other Intangible Assets	Other Intangible Assets: Intangible assets are initially recorded at their fair market values determined on quoted market prices in active markets, if available, or recognized valuation models. Intangible assets that have finite useful lives are amortized on a straight-line basis over their useful lives.
New Accounting Pronouncements, Policy [Policy Text Block]	New Accounting Pronouncements: In May 2014, the FASB and the International Accounting Standards Board ("IASB") issued new joint guidance surrounding revenue recognition. Under U.S. generally accepted accounting principles ("US GAAP"), this guidance is being introduced to the ASC as Topic 606, Revenue from Contracts with Customers ("Topic 606"), by Accounting Standards Update No. 2014-09 ("ASU 2014-09"). The new standard supersedes a majority of existing revenue recognition guidance under US GAAP, and requires companies to recognize revenue when it transfers goods or services to a customer in an amount that reflects the consideration to which a company expects to be entitled. Companies may need to use more judgment and make more estimates while recognizing revenue, which could result in additional disclosures to the financial statements. Topic 606 allows for either a "full retrospective" adoption or a "modified retrospective" adoption. The standard is effective for us in our fiscal year 2018. We are currently evaluating which method we will use and the revenue recognition impact this guidance will have once implemented.

Disclosure of accounting policy for major classes of inventories, bases of stating inventories (for example, lower of cost or market), methods by which amounts are added and removed from inventory classes (for example, FIFO, LIFO, or average cost), loss recognition on impairment of inventories, and situations in which inventories are stated above cost. If inventory is carried at cost, this disclosure includes the nature of the cost elements included in inventory.

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- Definition

Disclosure of accounting policy for revenue recognition. If the entity has different policies for different types of revenue transactions, the policy for each material type of transaction is generally disclosed. If a sales transaction has multiple element arrangements (for example, delivery of multiple products, services or the rights to use assets) the disclosure may indicate the accounting policy for each unit of accounting as well as how units of accounting are determined and valued. The disclosure may encompass important judgment as to appropriateness of principles related to recognition of revenue. The disclosure also may indicate the entity's treatment of any unearned or deferred revenue that arises from the transaction.

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