Revenue

Our revenue arrangements generally consist of a single performance obligation to transfer promised goods or services. We disaggregate revenues from contracts with customers by operating segments as well as types of product sold. Reporting by operating segment is pertinent to understanding our revenues, as it aligns to how we review the financial performance of our operations. Types of products sold within each operating segment help us to further evaluate the financial performance of our segments.

The following tables disaggregate external customer net sales by major revenue stream for the three and six months ended September 29, 2019 and September 30, 2018:



	Three months ended September 29, 2019
(In thousands)	Industrial		Water Treatment		Health and Nutrition		Total
Bulk / Distributed specialty products ⁽¹⁾	$	11,700	$	4,971	$	22,892	$	39,563
Manufactured, blended or repackaged products ⁽²⁾	55,506		40,487		3,189		99,182
Other	884		410		4		1,298
Total external customer sales	$	68,090	$	45,868	$	26,085	$	140,043

	Three months ended September 30, 2018
(In thousands)	Industrial		Water Treatment		Health and Nutrition		Total
Bulk / Distributed specialty products ⁽¹⁾	$	15,307	$	5,982	$	29,624	$	50,913
Manufactured, blended or repackaged products ⁽²⁾	53,204		36,305		3,499		93,008
Other	891		426		86		1,403
Total external customer sales	$	69,402	$	42,713	$	33,209	$	145,324

	Six months ended September 29, 2019
(In thousands)	Industrial		Water Treatment		Health and Nutrition		Total
Bulk / Distributed specialty products ⁽¹⁾	$	26,790	$	9,679	$	47,495	$	83,964
Manufactured, blended or repackaged products ⁽²⁾	114,900		78,637		7,333		200,870
Other	1,725		804		16		2,545
Total external customer sales	$	143,415	$	89,120	$	54,844	$	287,379

	Six months ended September 30, 2018
(In thousands)	Industrial		Water Treatment		Health and Nutrition		Total
Bulk / Distributed specialty products ⁽¹⁾	$	30,243	$	11,804	$	60,301	$	102,348
Manufactured, blended or repackaged products ⁽²⁾	111,236		70,964		7,684		189,884
Other	1,941		814		137		2,892
Total external customer sales	$	143,420	$	83,582	$	68,122	$	295,124

(1)

For our Industrial and Water Treatment segments, this line includes our bulk products that we do not modify in any way, but receive, store, and ship from our facilities, or direct ship to our customers in large quantities. For our Health and Nutrition segment, this line includes our non-manufactured distributed specialty products, which may be sold out of one of our facilities or direct shipped to our customers.

(2)

For our Industrial and Water Treatment segments, this line includes our non-bulk specialty products that we either manufacture, blend, repackage, resell in their original form, or direct ship to our customers in smaller quantities, and services we provide for our customers. For our Health and Nutrition segment, this line includes products manufactured, processed or repackaged in our facility and/or with our equipment.

Net sales include products and shipping charges, net of estimates for product returns and any related sales rebates. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring products. All revenue is recognized when we satisfy our performance obligations under the contract. Our criteria for recording revenue is consistent between our operating segments and types of products sold. We recognize revenue upon transfer of control of the promised products to the customer, with revenue recognized at the point in time the customer obtains control of the products. In arrangements where product is shipped directly from the vendor to our customer, we act as the principal in the transaction as we direct the other party to provide the product to our customer on our behalf, take inventory risk, establish the selling price, and are exposed to credit risk for the collection of the invoiced amount. If there were circumstances where we were to manufacture products for customers that were unique to their specifications and we would be prohibited by contract to use the product for any alternate use, we would recognize revenue over time if all criteria were met. We have made a policy election to treat shipping costs for FOB shipping point sales as fulfillment costs. As such, we recognize revenue for all shipping charges, if applicable, at the same time we recognize revenue on the products delivered. We estimate product returns based on historical return rates. Using probability assessments, we estimate sales rebates expected to be paid over the term of the contract. The majority of our contracts have a single performance obligation and are short term in nature. Sales taxes that are collected from customers and remitted to governmental authorities are accounted for on a net basis and therefore are excluded from net sales. We offer certain customers cash discounts and volume rebates as sales incentives. The discounts and volume rebates are recorded as a reduction in sales at the time revenue is recognized in an amount estimated based on historical experience and contractual obligations. We periodically review the assumptions underlying our estimates of discounts and volume rebates and adjust revenues accordingly.