Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018
Cash Flows From Operating Activities:
Net income	$ 20,180	$ 19,197
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	18,908	11,660
Non-cash lease expense	6,770
Provision for doubtful accounts	1,725	843
Stock based compensation	6,989	4,541
Change in fair value of contingent consideration	49	267
Gain on disposals of property and equipment	(48)	0
Deferred income taxes	(3,839)	564
Changes in operating assets and liabilities, net of impact of acquisitions:
Billed receivables	508	(6,396)
Unbilled receivables	(4,490)	(3,759)
Prepaid expenses and other assets	(5,279)	819
Accounts payable	(2,053)	(679)
Accrued liabilities	(9,170)	(3,259)
Income taxes payable	(2,789)	(6,713)
Billings in excess of costs and estimated earnings on uncompleted contracts	(5,972)	485
Deposits	68	0
Net cash provided by operating activities	21,557	17,570
Cash Flows From Investing Activities:
Cash paid for acquisitions (net of cash received from acquisitions)	(29,365)	(28,460)
Purchase of property and equipment	(1,810)	(1,582)
Net cash used in investing activities	(31,175)	(30,042)
Cash Flows From Financing Activities:
Proceeds from secondary offering	0	93,469
Borrowings from Senior Credit Facility	10,000	0
Payments on notes payable	(8,483)	(7,410)
Payments of contingent consideration	(1,213)	(728)
Proceeds from exercise of unit warrant	0	1,092
Payments of borrowings from Senior Credit Facility	0	(36,500)
Net cash provided by financing activities	304	49,923
Net (decrease) increase in Cash and Cash Equivalents	(9,314)	37,451
Cash and cash equivalents – beginning of period	40,739	18,751
Cash and cash equivalents – end of period	31,425	56,202
Non-cash investing and financing activities:
Contingent consideration (earn-out)	2,570	1,565
Notes payable and other obligations issued for acquisitions	10,044	8,356
Stock issuance for acquisitions	2,632	4,950
Capital leases	$ 769	$ 2,878