Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 27, 2020	Mar. 29, 2019	Mar. 29, 2019
Cash flows from operating activities:
Net income	$ 10.5	$ 1.4
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6.4	6.8
Amortization of intangible assets	4.9	4.9
Stock-based compensation	3.1	2.9	$ 2.9
Amortization of debt issuance costs	0.4	0.4
Loss on the disposal of assets and business		0.2
Deferred income taxes	1.0
Change in the fair value of financial instruments and earn-out liability	3.0	(1.4)
Changes in assets and liabilities:
Accounts receivable	(0.7)	(4.2)
Inventories	(14.7)	5.5
Prepaid expenses and other current assets	(0.2)	(2.4)
Other non-current assets	0.3	(0.9)
Accounts payable	(4.1)	(0.6)
Accrued compensation and related benefits	0.2	3.1
Income taxes payable	1.6	1.3
Operating lease assets and liabilities	(0.4)
Other liabilities	4.4	1.1
Net cash provided by operating activities	15.7	18.1
Cash flows from investing activities:
Purchases of property, plant and equipment	(6.7)	(4.8)
Proceeds from sale of equipment		0.6
Net cash used in investing activities	(6.7)	(4.2)
Cash flows from financing activities:
Proceeds from bank borrowings	51.5	6.6
Principal payments on bank borrowings and finance leases	(14.5)	(8.9)
Withholding tax on employee equity compensation		(0.8)
Net cash provided by (used in) financing activities	37.0	(3.1)
Effect of exchange rate changes on cash and cash equivalents	(0.4)	(0.1)
Net increase in cash and cash equivalents	45.6	10.7
Cash and cash equivalents at beginning of period	162.5	144.1
Cash and cash equivalents at end of period	208.1	154.8	$ 154.8
Supplemental cash flow information:
Income taxes paid, net of income tax refunds	2.0	4.0
Interest paid	4.8	5.6
Non-cash investing and financing activities:
Property, plant and equipment purchased included in accounts payable and other liabilities	$ 2.9	$ 7.1