CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash Flows From Operating Activities:
Net income	$ 80.5	$ 67.6	$ 55.9
Loss from discontinued operations, net	1.6	0.4	0.1
Income from continuing operations	82.1	68.0	56.0
Adjustments to reconcile net income from continuing operations to cash provided by operating activities of continuing operations:
Depreciation	29.7	25.4	20.0
Amortization	22.0	13.1	9.6
Stock-based compensation	9.0	9.9	7.2
Pension and other post-retirement benefits expense	(0.2)	(1.0)	(1.4)
Deferred income taxes	18.3	(0.1)	5.8
Other	(0.4)	(0.7)	0.1
Changes in operating assets and liabilities, net of effects of acquisitions:
Trade receivables, net	(35.8)	(29.0)	(11.3)
Inventories	(23.7)	(2.9)	15.6
Accounts payable, trade and other	8.5	16.1	10.4
Advance payments and progress billings	3.4	(17.0)	26.9
Accrued pension and other post-retirement benefits, net	(11.2)	(10.5)	(14.3)
Other assets and liabilities, net	4.6	(3.4)	(12.4)
Cash provided by continuing operating activities	106.3	67.9	112.2
Net cash required by discontinued operating activities	(1.7)	(0.5)	(0.3)
Cash provided by operating activities	104.6	67.4	111.9
Cash Flows From Investing Activities:
Acquisitions, net of cash acquired	(104.2)	(232.0)	(150.9)
Capital expenditures	(37.9)	(37.1)	(37.7)
Proceeds from disposal of assets	2.2	2.3	1.5
Proceeds from property available for sale	0.0	0.0	2.0
Cash required by investing activities	(139.9)	(266.8)	(185.1)
Cash Flows From Financing Activities:
Net proceeds (payments) on short-term debt	(1.0)	0.9	(1.5)
Proceeds from short-term foreign credit facilities	6.8	15.3	0.0
Payments of short-term foreign credit facilities	(8.4)	(11.0)	0.0
Net proceeds (payments) from domestic credit facilities	(111.8)	62.4	184.3
Issuance of long-term debt	0.0	149.5	0.0
Cash payments to settle private placement debt	0.0	0.0	(75.0)
Repayment of long-term debt	(1.5)	(2.0)	(1.4)
Proceeds from stock issuance, net of stock issuance costs	184.1
Excess tax benefits	0.0	1.5	2.2
Settlement of taxes withheld on equity compensation awards	(10.5)	(2.6)	(5.8)
Purchase of treasury stock	(5.0)	(4.3)	(7.7)
Dividends	(12.7)	(11.8)	(11.2)
Other	(5.3)	(3.0)	0.0
Cash provided by financing activities	34.7	194.9	83.9
Effect of foreign exchange rate changes on cash and cash equivalents	1.4	0.5	(6.8)
Increase (decrease) in cash and cash equivalents	0.8	(4.0)	3.9
Cash and cash equivalents, beginning of period	33.2	37.2	33.3
Cash and cash equivalents, end of period	34.0	33.2	37.2
Supplemental Cash Flow Information:
Interest paid	13.1	10.4	7.7
Income taxes paid	24.0	25.8	13.8
Consideration, due to seller	$ 0.0	$ 0.0	$ 0.0