Realignment Actions Realignment Actions (Notes)	9 Months Ended
	Sep. 30, 2020
Realignment Actions [Abstract]
Restructuring, Impairment, and Other Activities Disclosure [Text Block]	Realignment ActionsIn the three and nine months ended September 30, 2020, the Company executed certain realignment actions, primarily in its Aerospace and Specialty Products segments, in response to reductions in current and expected future end market demand. During the nine months ended September 30, 2020, the Company recorded a non-cash charge of approximately $13.2 million related to inventory reductions, primarily as a result of a strategic decision in its Arrow Engine division to narrow its product line focus. During the three and nine months ended September 30, 2020, the Company also recorded non-cash charges of approximately $0.1 million and $2.3 million, respectively, related to certain production equipment removed from service given reduced demand levels. In addition, the Company reduced its employment levels given lower customer demand incurring approximately $0.5 million and $3.6 million during the three and nine months ended September 30, 2020, respectively, in severance charges, of which approximately $2.9 million was paid by September 30, 2020. For the three and nine months ended September 30, 2020, approximately $0.4 million and $16.4 million of these charges were included in cost of sales, respectively, and approximately $0.2 million and $2.7 million were included in selling, general and administrative expenses, respectively, in the accompanying consolidated statement of operations.