Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2011

Summary of Significant Accounting Policies [Abstract]

Summary of Significant Accounting Policies

2. Summary of Significant Accounting Policies

Basis of Presentation

     Our consolidated financial statements include our accounts and the accounts for our wholly owned subsidiary, Rockwell Transportation, Inc. All intercompany balances and transactions have been eliminated in consolidation. The accompanying consolidated financial statements have been prepared using accounting principles generally accepted in the United States of America, or “GAAP,” and with the instructions to Form 10-Q and Securities and Exchange Commission Regulation S-X as they apply to interim financial information. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. The balance sheet at December 31, 2010 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by GAAP for complete financial statements.

     In the opinion of our management, all adjustments have been included which are necessary to make the financial statements not misleading. All of these adjustments that are material are of a normal and recurring nature. Our operating results for the three and six month periods ended June 30, 2011 are not necessarily indicative of the results to be expected for the year ending December 31, 2011. You should read our unaudited interim financial statements together with the financial statements and related footnotes for the year ended December 31, 2010 included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2010. Our Annual Report on Form 10-K for the fiscal year ended December 31, 2010 includes a description of our significant accounting policies.

Revenue Recognition

     We recognize revenue at the time we transfer title to our products to our customers consistent with generally accepted accounting principles. Generally, we recognize revenue when our products are delivered to our customer’s location consistent with our terms of sale. We recognize revenue for international shipments when title has transferred consistent with standard terms of sale.

     We require certain customers, mostly international customers, to pay for product prior to the transfer of title to the customer. Deposits received from customers and payments in advance for orders are recorded as liabilities under Customer Deposits until such time as orders are filled and title transfers to the customer consistent with our terms of sale. At June 30, 2011 and December 31, 2010 we had customer deposits of $141,540 and $165,476, respectively.

Cash and Cash Equivalents

     We consider cash on hand, money market funds, unrestricted certificates of deposit and short term marketable securities with an original maturity of 90 days or less as cash and cash equivalents.

Investments Available for Sale

     Investments Available for Sale are short-term investments, consisting principally of investments in short term duration bond funds, and are stated at fair value based upon observed market prices (Level 1 in the fair value hierarchy). Unrealized holding gains or losses on these securities are included in accumulated other comprehensive income (loss). Realized gains and losses, including declines in value judged to be other-than-temporary on available-for-sale securities are included as a component of other income or expense. There were no such realized gains or losses during the three and six months ended June 30, 2011 and June 30, 2010.

Research and Product Development

     We recognize research and product development expenses as incurred. We incurred product development and research costs related to the commercial development, patent approval and regulatory approval of new products, including iron supplemented dialysate, aggregating approximately $3.3 million and $5.7 million for the three and six months ended June 30, 2011, respectively, and approximately $0.4 million and $1.0 million for the three and six moths ended June 30, 2010, respectively.

     We are conducting human clinical trials on iron supplemented dialysate and we recognize the costs of the human clinical trials as the costs are incurred and services performed over the duration of the trials.

Net Earnings Per Share

     We computed our basic earnings (loss) per share using weighted average shares outstanding for each respective period. Diluted earnings per share also reflect the weighted average impact from the date of issuance of all potentially dilutive securities, consisting of stock options and common share purchase warrants, unless inclusion would have had an anti-dilutive effect. Actual weighted average shares outstanding used in calculating basic and diluted earnings per share were:

	Three months ended June 30,				Six months ended June 30,
	2011		2010		2011		2010
Basic Weighted Average Shares Outstanding		17,575,673		17,086,723		17,441,426		17,069,297
Effect of Dilutive Securities		—		1,519,151		—		—
Diluted Weighted Average Shares Outstanding		17,575,673		18,605,874		17,441,426		17,069,297