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Revenues | 12 Months Ended
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Dec. 31, 2018
Revenue from Contract with Customer [Abstract] |
Revenues | Revenues Adoption of ASC Topic 606, "Revenue from Contracts with Customers" On January 1, 2018, the Company adopted Topic 606 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting under Topic 605. The Company operates as a manufacturer of various products, and revenue is comprised of short-term contracts with point-in-time performance obligations. As a result, the Company did not identify any differences in its recognition of revenue between Topic 606 and Topic 605. Accordingly, there was no adjustment required to opening retained earnings for the cumulative impact of adopting Topic 606 and no impact to revenues for the year-ended December 31, 2018 as a result of applying Topic 606. Revenue Recognition Revenues are recognized when control of the promised goods or services is transferred to our customers upon shipment, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services. The following table presents the Company's revenues, disaggregated by product group. Substantially all of the Company's revenues are derived from contracts with customers where performance obligations are satisfied at a point-in-time.
|  | Twelve Months Ended
|  | Dec 31, 2018 |  | Dec 31, 2017
Storage tank and vessel |  | $ | 31,653,832 |  |  | $ | 27,599,731 |
Seamless carbon steel pipe and tube |  | 32,473,950 |  |  | 25,103,641 |
Stainless steel pipe |  | 146,237,630 |  |  | 100,253,823 |
Galvanized pipe |  | 11,876,733 |  |  | — |
Specialty chemicals |  | 58,599,274 |  |  | 48,190,487 |
Total revenues |  | $ | 280,841,419 |  |  | $ | 201,147,682 |
Arrangements with Multiple Performance Obligations Our contracts with customers may include multiple performance obligations. For such arrangements, revenue for each performance obligation is based on its stand-alone selling price and revenue is recognized as each performance obligation is satisfied. The Company generally determines stand-alone selling prices based on the prices charged to customers using the adjusted market assessment approach or expected cost plus margin. Deferred Revenues Deferred revenues are recorded when cash payments are received in advance of satisfying the performance obligation, including amounts which are refundable. The deferred revenue balance decreased $7,356 during 2018 to $177,518 as of December 31, 2018 due to receiving $2,597,792 in advance of satisfying our performance obligations during the period, offset by $2,605,148 of revenue that was recognized during the period after satisfying the performance obligations that were included in the beginning deferred revenue balance or received during the current period. Deferred revenues are included in "Accrued expenses" on the accompanying Consolidated Balance Sheets. Our payment terms vary by the financial strength or location of our customer and the products offered. The length of time between invoicing and when payment is due is not significant. For certain customers, payment is required before the products or services are delivered to the customer. Practical Expedients and Election When shipping and handling activities are performed after a customer obtains control of goods, the Company reflects shipping and handling activities as part of satisfying the obligation of providing goods to the customer. In some instances, the Company withholds various states' sales taxes upon shipments into those states. Accordingly, management makes an accounting policy election to exclude from the measurement of the transaction price all taxes assessed by a governmental authority that are imposed on and concurrent with a specific revenue-producing transaction and collected from a customer. The Company expenses sales commissions when incurred because the amortization period would have been one year or less. These costs are recorded within selling, general, and administrative expenses. The Company does not disclose the value of unsatisfied performance obligations since contracts are expected to be completed within one year.

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -URI http://asc.fasb.org/topic&trid=49130388 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -URI http://asc.fasb.org/topic&trid=2122369 + Details
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