Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 28, 2015
Mar. 29, 2014
Dec. 27, 2014
Dec. 28, 2013
Dec. 29, 2012
Cash flow from operating activities:          
Net loss $ (79,837) $ (53,068) $ (6,282) $ (103,679) $ (50,577)
Adjustments to reconcile net loss to net cash used in operating activities:          
Depreciation, depletion, amortization and accretion 27,358 20,789 95,211 75,927 72,179
Net interest expense 982 850 252 3,256 3,266
Share-based compensation expense 15,217 566 2,235 2,315 2,533
Deferred income tax benefit   (525) (5,927) (4,408) (3,468)
Net (gain) loss on asset disposals (1,834) (48) 6,500 12,419 2,564
Goodwill impairment       68,202  
Loss on debt financings 688     2,989 9,469
Other 780 558 (957) (1,098) (874)
Decrease (increase) in operating assets, net of acquisitions:          
Accounts receivable, net 30,309 16,989 (10,366) 9,884 5,201
Inventories (21,413) (13,377) (3,735) 499 (1,726)
Costs and estimated earnings in excess of billings (1,662) (839) 1,359 196 6,931
Other current assets (303) 9 (3,997) (453) 3,494
Other assets 755 3,202 4,767 (1,708) 1,189
(Decrease) increase in operating liabilities, net of acquisitions:          
Accounts payable (10,045) (10,239) (6,455) 4,067 (6,076)
Accrued expenses (20,669) (9,620) 13,162 (742) 17,175
Billings in excess of costs and estimated earnings (649) (2,728) (305) 1,998 2,589
Other liabilities (203) (2,044) (6,373) (3,252) (1,590)
Net cash used in operating activities (61,508) (50,375) 79,089 66,412 62,279
Cash flow from investing activities:          
Acquisitions, net of cash acquired   (182,514) (397,854) (61,601) (48,757)
Purchases of property, plant and equipment (17,708) (19,941) (76,162) (65,999) (45,488)
Proceeds from the sale of property, plant and equipment 2,741 2,202 13,366 16,085 8,836
Other (276) 7 (630)   69
Net cash used for investing activities (15,243) (200,246) (461,280) (111,515) (85,340)
Cash flow from financing activities:          
Proceeds from initial public offering 460,000        
Capital issuance costs (35,956)        
Capital contributions by partners   24,350 24,350    
Proceeds from debt issuances 104,000 306,750 762,250 234,681 726,442
Payments on long-term debt     (389,270) (188,424) (697,438)
Debt issuance costs (4,055) (6,309)      
Payments on debt (106,441) (54,314)      
Purchase of noncontrolling interest in consolidated subsidiary (35,000)        
Payments on acquisition-related liabilities (4,032) (638) (10,935) (9,801) (7,519)
Financing costs     (9,085) (3,864) (13,081)
Other     (88) (3) (702)
Net cash provided by (used for) financing activities 378,516 269,839 377,222 32,589 7,702
Net increase in cash 301,765 19,218 (4,969) (12,514) (15,359)
Cash - Beginning of period 13,215 18,184 18,184 30,698 46,057
Cash - end of period $ 314,980 $ 37,402 $ 13,215 $ 18,184 $ 30,698