Manufacturing margins were $58.7 million for the year ended December 31, 2019 as compared to $50.6 million for the same prior year period. The increase of $8.1 million was driven by $21.1 million of contributions from the former DMP locations offset by declines at the legacy MEC locations. The declines in market demand, destocking, and impact of customer labor issues adversely impacted volumes and the labor absorption associated with it. These circumstances, along with the costs associated with working through the consolidation of the Company’s Virginia facilities, shift consolidations across multiple facilities and increased healthcare costs, coupled with fewer working days in the fourth quarter, negatively impacted our cost. These conditions collectively produced an unusual amount of under-absorbed manufacturing expenses and lower manufacturing margins in the third quarter and especially in the fourth quarter.
Amortization expenses were $10.7 million for the year ended December 31, 2019 as compared to $4.1 million for the same prior year period. The increase was solely attributable to the amortization of identifiable intangible assets related to the DMP acquisition.
Depreciation expenses were $22.3 million for the year ended December 31, 2019 as compared to $16.4 million for the same prior year period. The increase relates to the addition of DMP and investments in new technology and automation.
Profit sharing, bonuses, and deferred compensation expenses were $25.1 million for the year ended December 31, 2019 as compared to $8.1 million for the same prior year period. The increase of $17.0 million was primarily driven by aone-time $10.2 million increase in deferred compensation plan expense and aone-time $9.9 million increase in long term incentive plan (“LTIP”) expense, both related to the IPO, offset by a $2.6 million reduction in annual incentive-based bonus expense.
Other selling, general and administrative expenses were $25.5 million for the year ended December 31, 2019 as compared to $12.3 million for the same prior year period. The increase of $13.2 million was driven by $5.7 million ofone-time IPO and DMP acquisition related expenses, $5.3 million from the former DMP acquired entities, plus additional costs associated with being a public company.
The contingent consideration payable related to the DMP earnout was adjusted to zero during the third quarter of 2019, resulting in a $6.1 millionnon-cash revaluation adjustment. The Company’s position that no earnout payment is due has been agreed to by DMP’s former shareholders.
Interest expense was $6.7 million for the year ended December 31, 2019 as compared to $3.9 million for the same prior year period. The increase was due to additional debt related to the DMP acquisition, slightly offset by the partial paydown of debt with the IPO proceeds in May and net positive cash flows generated by the business.
Income tax benefits were $4.1 million for the year ended December 31, 2019. The benefit is the result of the Company’s legacy business converting to a C corporation on May 12, 2019, in conjunction with theone-time IPO and DMP acquisition related expenses incurred during the year.
EBITDA and EBITDA Margin percent were $30.9 million and 5.9%, respectively, for the year ended December 31, 2019 as compared to $41.8 million and 11.8%, respectively, for the year ended December 31, 2018. The $10.9 million decline in EBITDA was due to the previously
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